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Funny Pi Day Shirt – Irrational Feelings About Pi

4.7 out of 5 stars rating
32271 Total Reviews |
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Style
Basic T-Shirt
-$2.00
+$14.35
Colour & Print Process
White
Classic Printing: No Underbase
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Vivid Printing: White Underbase
+$8.55
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About T-Shirts

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Style: Men's Basic T-Shirt

Comfortable, casual and loose fitting, our heavyweight t-shirt will easily become a closet staple. Made from 100% cotton, it's unisex and wears well on anyone and everyone. We’ve double-needle stitched the bottom and sleeve hems for extra durability.

Size & Fit

  • Model is 185 cm and is wearing a medium
  • Standard fit
  • Garment is unisex sizing
  • Fits true to size

Fabric & Care

  • 100% cotton (Heathers are a cotton/poly blend)
  • Double-needle hemmed sleeves and bottom
  • Machine wash cold, tumble dry low
  • Imported

About This Design

Funny Pi Day Shirt – Irrational Feelings About Pi

Funny Pi Day Shirt – Irrational Feelings About Pi

Show off your love for math humor with this funny Pi Day t-shirt design featuring a cute cartoon pi (π) character holding a slice of pie. The clever phrase “I Have Irrational Feelings About Pi” is a perfect math pun that teachers, students, engineers, and STEM lovers will instantly get. This playful illustration is ideal for Pi Day (March 14), math class, school events, STEM clubs, or as a fun gift for math teachers and nerdy friends. Looks great on t-shirts, hoodies, stickers, mugs, and posters.
owlnset
Artwork designed by
BATNA, paris , Algeria
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Customer Reviews

4.7 out of 5 stars rating32.3K Total Reviews
25268 total 5-star reviews4922 total 4-star reviews1110 total 3-star reviews497 total 2-star reviews474 total 1-star reviews
32,271 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Shelley M.3 October 2022 • Verified Purchase
Value T-Shirt, White, Large
Zazzle Reviewer Program
I was really pleased with this shirt, the quality of the Tshirt was excellent, the artwork and print stands out and the fit is true to size....my son loved this for his 16th birthday 😀. Very good quality and color
5.0 out of 5 stars rating
5 out of 5 stars rating
By Vivienne C.9 June 2023 • Verified Purchase
Basic T-Shirt, White, Small
Zazzle Reviewer Program
AAA+++ Perfect gift for my old dad. He loved it - highly recommend and will buy again. Printing looked perfect to me
5.0 out of 5 stars rating
5 out of 5 stars rating
By Stuart B.28 June 2025 • Verified Purchase
Basic Dark T-Shirt, Black, Large
Excellent design platform, great quality material and printing, and quick delivery: couldn't ask for more...

Tags

T-Shirts
pi day shirtfunny math shirtpi symbol shirtmath pun t shirtgeek shirtnerd shirtmath teacher giftstem giftpi day giftmath humor
All Products
pi day shirtfunny math shirtpi symbol shirtmath pun t shirtgeek shirtnerd shirtmath teacher giftstem giftpi day giftmath humor

Other Info

Product ID: 256318756297616075
Posted on 16/02/2026, 9:49 AM
Rating: G