Funny 21St Birthday Shirts For Guys

Shop Unethical Threads' funny 21st birthday shirts for guys collection for designs that make people do a double-take. Our funny 21st birthday shirts for guys bring the laughs without compromising on comfort or quality. Available in sizes S-4XL with hassle-free returns.

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  • Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor. Funny “Think Outside The Box” tee isn’t just a double entendre — it’s a full send into unfiltered adult humor.

    Think Outside "The Box" Tee

    Think Outside "The Box" Tee

    From $24.99 USD
    From $24.99 USD
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    Size
  • Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup. Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup. Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup. Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup. Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup. Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup. Sepia-toned graphic of Jesus stepping out of a tomb with arms outstretched, paired with the phrase "Coming Out Of My Cave And I’ve Been Doing Just Fine" in bold vintage-style text, referencing Mr. Brightside lyrics in a humorous biblical mashup.

    Coming Out Of My Cave - Lyrics Jesus Easter Tee

    Coming Out Of My Cave - Lyrics Jesus Easter Tee

    From $24.99 USD
    From $24.99 USD
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    Size
  • Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist. Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist. Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist. Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist. Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist. Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist. Funny “Call Me The Third Little Piggy” shirt takes the classic childhood tale and gives it an absurdly adult humor twist.

    Call Me The Third Little Piggy Tee

    Call Me The Third Little Piggy Tee

    $24.99 USD
    $24.99 USD
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    Size
  • A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value. A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value. A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value. A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value. A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value. A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value. A cursed twist on the “100 Men vs. 1 Gorilla” meme — this unhinged tee boldly declares your ability to beat off the competition... literally. Wildly inappropriate and destined to go viral, it’s the perfect shirt for anyone who thrives on chaos and shock value.

    I'm Not A Gorilla But I Can Beat Off 100 Men Tee

    I'm Not A Gorilla But I Can Beat Off 100 Men Tee

    From $24.99 USD
    From $24.99 USD
    Color
    Size
  • Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers. Funny I Had Cybersex With Chatgpt T-Shirt featuring adult humor and meme-inspired design, perfect for casual wear and humor lovers.

    I Had Cybersex With Chatgpt Tee

    I Had Cybersex With Chatgpt Tee

    From $24.99 USD
    From $24.99 USD
    Color
    Size
  • Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy. Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy. Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy. Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy. Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy. Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy. Vintage-style graphic featuring six depictions of Jesus Christ in sepia tones with humorous swagger, arranged symmetrically beneath bold arched text reading "JESUS HAS RIZZEN." The design is a Gen Z parody of the Easter phrase “He is Risen,” blending traditional Christian imagery with ironic meme aesthetics, divine drip, and playful resurrection energy.

    Jesus Has Rizzen Rizz Easter Tee

    Jesus Has Rizzen Rizz Easter Tee

    From $24.99 USD
    From $24.99 USD
    Color
    Size
  • Crazy funny trucker hat for men with bold text that says “My GF Beats Me” — a dark humor mesh-back hat designed for guys who love inappropriate jokes, outrageous sayings, and wild party conversations. Crazy funny trucker hat for men with bold text that says “My GF Beats Me” — a dark humor mesh-back hat designed for guys who love inappropriate jokes, outrageous sayings, and wild party conversations. Crazy funny trucker hat for men with bold text that says “My GF Beats Me” — a dark humor mesh-back hat designed for guys who love inappropriate jokes, outrageous sayings, and wild party conversations. Crazy funny trucker hat for men with bold text that says “My GF Beats Me” — a dark humor mesh-back hat designed for guys who love inappropriate jokes, outrageous sayings, and wild party conversations.

    My GF Beats Me Hat

    My GF Beats Me Hat

    $29.99 USD
    $29.99 USD
    Color
  • Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified. Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified. Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified. Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified. Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified. Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified. Funny “Call Me Goldilocks Cause I’m About To Try All 3” — this tee is for the dangerously curious and chronically inappropriate. A chaotic spin on the fairytale classic, it’s perfect for those who like their humor unfiltered, suggestive, and Gen Z certified.

    Call Me Goldilocks Three Bears Tee

    Call Me Goldilocks Three Bears Tee

    From $24.99 USD
    From $24.99 USD
    Color
    Size
  • Funny inappropriate shirt with a shocked donkey graphic and bold text saying “Men Eat What?!” Perfect adult humor tee for meme lovers, party outfits, and gag gifts. Funny inappropriate shirt with a shocked donkey graphic and bold text saying “Men Eat What?!” Perfect adult humor tee for meme lovers, party outfits, and gag gifts. Funny inappropriate shirt with a shocked donkey graphic and bold text saying “Men Eat What?!” Perfect adult humor tee for meme lovers, party outfits, and gag gifts. Funny inappropriate shirt with a shocked donkey graphic and bold text saying “Men Eat What?!” Perfect adult humor tee for meme lovers, party outfits, and gag gifts. Funny inappropriate shirt with a shocked donkey graphic and bold text saying “Men Eat What?!” Perfect adult humor tee for meme lovers, party outfits, and gag gifts. Funny inappropriate shirt with a shocked donkey graphic and bold text saying “Men Eat What?!” Perfect adult humor tee for meme lovers, party outfits, and gag gifts.

    Men Eat What? Donkey Tee

    Men Eat What? Donkey Tee

    From $24.99 USD
    From $24.99 USD
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    Size
  • Tariff My Clothes Uncle Sam Tee Tariff My Clothes Uncle Sam Tee Tariff My Clothes Uncle Sam Tee Tariff My Clothes Uncle Sam Tee Tariff My Clothes Uncle Sam Tee Tariff My Clothes Uncle Sam Tee Tariff My Clothes Uncle Sam Tee

    Tariff My Clothes Uncle Sam Tee

    Tariff My Clothes Uncle Sam Tee

    From $24.99 USD
    From $24.99 USD
    Color
    Size
  • Funny inappropriate drinking trucker hat for men with bold white text that says “Blackout With Your Rack Out” — a hilarious mesh hat perfect for beer lovers, wild parties, and anyone who enjoys crazy hats with bold sayings. Funny inappropriate drinking trucker hat for men with bold white text that says “Blackout With Your Rack Out” — a hilarious mesh hat perfect for beer lovers, wild parties, and anyone who enjoys crazy hats with bold sayings.

    Blackout With Your Rack Out Hat

    Blackout With Your Rack Out Hat

    $29.99 USD
    $29.99 USD
    Color