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Constantly Irrational - Pi Day Math & STEM Humor T-Shirt

Qty:
Basic Dark T-Shirt
-£1.55
+£5.45
Black
Vivid Printing: White Underbase

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About T-Shirts

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Style: Basic Dark T-Shirt

Comfortable, casual and loose fitting, our heavyweight dark colour t-shirt will quickly become one of your favorites. 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. Select a design from our marketplace or customise it to make it uniquely yours!

Size & Fit

  • Model is 188 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
  • Imported
  • Machine wash cold

About This Design

Constantly Irrational - Pi Day Math & STEM Humor T-Shirt

Constantly Irrational - Pi Day Math & STEM Humor T-Shirt

Celebrate your love for the infinite with this clever Constantly Irrational T-Shirt. A must-have for mathletes, engineers, and science enthusiasts, this design features the Greek letter $\pi$ (Pi) alongside the witty phrase "Constantly Irrational." It’s a brilliant play on words that captures the essence of the world’s most famous mathematical constant—a number that never ends and never repeats. Whether you’re a calculus pro, a high school geometry teacher, or just someone who enjoys a high-brow pun, this shirt is the perfect formula for style and humor.This classic apparel piece is the ultimate uniform for Pi Day (March 14th), math competitions, or casual days in the lab. It serves as a fun conversation starter that bridges the gap between complex mathematics and everyday wit. It’s a thoughtful gift for STEM students, data scientists, or that friend whose personality is just as "constantly irrational" as the number itself. Perfectly balancing academic pride with a lighthearted aesthetic, this tee proves that being a "math person" is always in style. Crafted from soft, breathable, high-quality cotton, this t-shirt is designed for maximum comfort whether you're solving equations or grabbing coffee. The bold typography and crisp Pi symbol are printed with eco-friendly, fade-resistant inks to ensure the punchline remains sharp and clear through every wash. With a comfortable fit and durable construction, this math pun t-shirt makes an exceptional graduation gift, a unique treat for your favorite professor, or a proud wardrobe staple for anyone who embraces their inner nerd.

Customer Reviews

4.7 out of 5 stars rating33K Total Reviews
25815 total 5-star reviews5062 total 4-star reviews1136 total 3-star reviews500 total 2-star reviews480 total 1-star reviews
32,993 Reviews
Reviews for similar products
5 out of 5 stars rating
By Joan B.26 April 2021Verified Purchase
Basic Dark T-Shirt, Black, Adult L
Zazzle Reviewer Program
I give wanted to give this a 4 instead of a 5 because these Basic DARK T0shirts run unexpectedly SLIM or Narrow. Which is great if you do not have a potbelly, but I have a paunch. It isn't the shirt's fault that I've got a beer belly. The design and shirt itself is a quality cotton shirt. The color is more of a deep purple, but still a very pretty color. The Basic DARK T-shirts run a bit SLIMMER than the Basic Ts. The neck is a fraction narrower (or seems to be narrower) also. I'm a paunchy middle-aged woman and my neck is 12 inches (31cm) thick and the neckline fell about the same as in the photo of the man, and I had the desire to tug it a bit. So if you're a thick necked man or like loose shirts, be aware these are slimmer shirts. Once I get rid of my lockdown paunch it'll look great. The shirt washed well in cold water with no apparent bleeding. We don't have a dryer, so it hung dry. Did not shrink. Love the colors and the design. The design looks smaller on my shirt than it does on the model on-line. But still, it looks good on the shirt. The printing looks as it does on the model, just the size seems fractionally smaller. Washed garment in cold water, hung dry and design appeared unaffected.
5 out of 5 stars rating
By Katalin B.27 May 2019Verified Purchase
Basic Dark T-Shirt, Brown, Adult S
Creator Review
Thank you very much, it is a very great product! Excellent quality, thank you!
5 out of 5 stars rating
By Mark S.14 December 2017Verified Purchase
Basic Dark T-Shirt, Black, Adult L
Creator Review
I'm wearing this as I type... It's fab! Lovely quality. Soft material, perfect fit, nice and warm (It is very cold here, I live at the top of a hill and the wind is brutal in winter). Couldn't be happier with this. My Girlfriend really likes it as well - always a bonus! I was really impressed by how the printing turned out - my photo's don't do it justice. This is a complex design with a lot of colour variations but the finished article is really impressive. I couldn't be happier with how this has turned out. This is also one of my first designs to have been purchased by someone else (thank you so much!) I'm really curious to know what they think of the finished product...

Tags

T-Shirts
constantly irrational t shirtpi day math pun apparelfunny stem teacher giftmathematical constant symbol teenerd humor graphic shirtengineering student humor gearmathematics science nerd giftgreek letter pi clothingcalculus and geometry puncustom science geek wardrobe
All Products
constantly irrational t shirtpi day math pun apparelfunny stem teacher giftmathematical constant symbol teenerd humor graphic shirtengineering student humor gearmathematics science nerd giftgreek letter pi clothingcalculus and geometry puncustom science geek wardrobe

Other Info

Product ID: 256587132224930498
Created on 21/04/2026, 5:03
Rating: G