Similar to our FSCK THE ESTABLISHMENT
T-shirt, the "FORK YOU" shirt can be interpreted it multiple ways that depend entirely on your Linux kung-fu knowledge. Just be careful if anybody asks you about your T-shirt, not everyone will find the idea of "spawning child processes" amusing. If they do, you may have found your soulmate.
This is a 100% organic cotton dark blue T-shirt and "Linux.com" with Tux graphic on the sleeve. If anyone takes offense, just tell them it's fair trade and ethically-sourced.