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Sale Price $18.24.  
Original Price $21.45 Comp. value
per shirt
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Blocked by Network I/O Programmer C++ Developer T- T-Shirt

Qty:
  1. Size

  2. Style

  3. Color & 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 color 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 customize it to make it uniquely yours!

Size & Fit

  • Model is 6’2” 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

Blocked by Network I/O Programmer C++ Developer T- T-Shirt

Saved 3 nanoseconds in CPU cache, only to be blocked by network I/O for 4 seconds! This brutalist, dark-mode software engineering design captures the ultimate irony of premature optimization. Built for C++ systems engineers, backend developers, and low-level coders who appreciate high-performance architecture.

Customer Reviews

4.7 out of 5 stars rating32.3K Total Reviews
25285 total 5-star reviews4902 total 4-star reviews1109 total 3-star reviews499 total 2-star reviews485 total 1-star reviews
32,280 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By Jenny S.September 9, 2025 • Verified Purchase
Value T-Shirt, Black, Small
My 11 yo wore adult XL (5’7” 165#). The 8yo is small framed. She wore adult small and tied it in the back. Grandma wore adult large with long sleeve shirt underneath. Tall girl adult medium. Dark haired male adult large. Good quality dark Heather gray, Gildan brand shirt. -it was next up from basic choice and cost about $20 per shirt. Not too thick or thin. Washed and dried well, no major shrinkage. Not see-through. Can wear a bra under it fine. Screen print is just as shown and well done, front and back.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Anthony B.March 1, 2017 • Verified Purchase
Basic Dark T-Shirt, Navy Blue, Large
Zazzle Reviewer Program
I can spend hours readings the crazy sayings on t-shirts because I have nothing better to do with my life. On this particular day of shopping, I wanted several beard lover t-shirts and added this "I Won't Grow Up" with my purchase among several other interesting designs. I am not going to "golly gee" every shirt in my order, but I was elated with my selections. I'm retired and want to remain young in spirit while rocking a swag style to encourage my fellow seniors to loosen up and have fun! A picture says a hundred words, so I'll upload photos for future customers to see that the t-shirt are represented in the true colors as displayed on the Zazzle website. Don't let my mean, "no smile" look take away from the cool shirt...I'm happy!
5.0 out of 5 stars rating
5 out of 5 stars rating
By Jenny S.September 9, 2025 • Verified Purchase
Value T-Shirt, Black, Small
My 11 yo wore adult XL (5’7” 165#). The 8yo is small framed. She wore adult small and tied it in the back. Dark haired male wearing adult large and female wearing adult medium. Good quality dark Heather gray, Gildan brand shirt. -it was next up from basic choice and cost about $20 per shirt. Not too thick or thin. Washed and dried well, no major shrinkage. Not see-through. Can wear a bra under it fine. Screen print is just as shown and well done, front and back. They printed random cupcake image I downloaded from internet with no problems! Looked perfect! Front design was stock from zazzel.

Tags

software engineercplusplusbackend developerprogramming humorcomputer scienceoptimizationbare metaltechweardeveloper giftlinux terminal

Other Info

Blocked by Network I/O Programmer C++ Developer T- T-Shirt
Product ID: 256292228229916092
Created on: 10/20/2026, 8:51 AM
Rating: G