Funny 31st Birthday Math T-Shirt

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Celebrate turning 31 with this unique and humorous black t-shirt! Featuring a bold graphic with the square root of 961 and the words "YEARS OLD", it's the perfect way to show off your love for math and your age. The design is surrounded by various math equations and graphics, adding a quirky and intellectual touch. Made from a comfortable, breathable fabric, this tee is perfect for casual wear, birthday parties, or as a fun gift for the math enthusiast in your life. Let everyone know you're 31 years young and proud of it!

Tags:

#birthday t-shirt #math shirt #31st birthday #funny shirt #nerd shirt #geek shirt #square root #black tee #mathematics #birthday gift
$35.99 $9.99

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Available Styles:

Variant 1 of Funny 31st Birthday Math T-Shirt
Variant 2 of Funny "I Have Nothing To Wear" Black T-Shirt
Variant 3 of Lawyers vs Physicians Graphic Tee - Funny T-Shirt
Variant 4 of Happiness vs Energy Drinks Funny Graphic Tee
Variant 5 of I Like to Party T-Shirt - Coffee & Counting Pills
Variant 6 of Law School Emotional Distress T-Shirt
Variant 7 of Free Lunch Funny Graphic T-Shirt
Variant 8 of I Am Nicer T-Shirt - Funny Graphic Tee
Variant 9 of Chef's Attitude T-Shirt - Food Humor Tee
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Variant 11 of Funny "Lack of Planning" Graphic Tee
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Variant 21 of Funny Sloth Snail Turtle Graphic T-Shirt - "So Fast"
Variant 22 of Pretend I'm A Pirate Black Graphic Tee
Variant 23 of Nurses Supervisor Crazy Job T-Shirt
Variant 24 of Patience Level Critical Graphic Tee
Variant 25 of Clinical Coder Full Time Ninja T-Shirt
Variant 26 of Sponsor Voice T-Shirt - Funny Novelty Graphic Tee
Variant 27 of Friends Forever Funny T-Shirt
Variant 28 of Funny You Must Be Exhausted Graphic Tee
Variant 29 of Funny Letter E Graphic Tee - Black Cotton T-Shirt
Variant 30 of Funny "Old People" Graphic Tee

FAQ

Size Guide

Our tees fit true-to-size. Check the size chart before ordering to ensure a perfect fit.

Shipping Time

Processing 2–3 business days; standard delivery 5–12 business days depending on destination.

Care Instructions

Machine wash cold with like colors. Do not bleach. Tumble dry low. Iron inside-out if needed.