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Sale Price CA$46.80.  
Original Price CA$52.00 per shirt
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It Worked Yesterday Funny Programmer Cat Shirt

4.7 out of 5 stars rating
32889 Total Reviews |
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  2. Style

  3. Colour & Print Process: 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 favourites. 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 customize 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
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About This Design

It Worked Yesterday Funny Programmer Cat Shirt

A wide-eyed white cat panicking at a laptop that shows a big red error X, under bold 'IT WORKED YESTERDAY' caps and an error 404: panic label. Coding humour for programmers, developers, software engineers and CS students. Original design by CalmCodeStudio, created with AI-assisted tools.
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Customer Reviews

4.7 out of 5 stars rating32.9K Total Reviews
25765 total 5-star reviews4990 total 4-star reviews1126 total 3-star reviews509 total 2-star reviews499 total 1-star reviews
32,889 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Bob L.July 1, 2022 • Verified Purchase
Basic Dark T-Shirt, Black, Large
Zazzle Reviewer Program
They turned out exactly as we had hoped and we looked good even when we didn't bowl well. The printing was perfect and you can only see 9 pins on the shirt(the 5 pin hidden behind the headpin) which worked for us as we bowled in a 9 pin No-Tap league.
5.0 out of 5 stars rating
5 out of 5 stars rating
By ARLENE B.January 14, 2022 • Verified Purchase
Basic Dark T-Shirt, Black, Small
Zazzle Reviewer Program
The quality of the shirts is top notch, comfortable, well fitting, the material is great. The shirts are well made and we were proud to wear them. The colors were as bright, clear and pure as advertised, easily read, not only by us, but by family and friends who saw us while we were wearing them, immediately smiled, congratulated us, asked more about our big day 50 years ago.. The printing showed up great in pictures, and we have attached a copy of us wearing them.
5.0 out of 5 stars rating
5 out of 5 stars rating
By AnonymousJune 23, 2025 • Verified Purchase
Basic Dark T-Shirt, Navy Blue, Small
The shirt I ordered was too small. I contacted Zazzle and they replaced it with a larger size. Very happy. .

Tags

programmercat programmercodingdevelopersoftware engineercoderit worked yesterdaydebuggingcomputer sciencegenerativecontent

Other Info

It Worked Yesterday Funny Programmer Cat Shirt
Product ID: 256381755634316539
Designed on 2026-10-19, 10:05 a.m.
Rating: G