About T-Shirt Design
If you like shirts that actually have some personality, I'm Running For A Cause I Have to Poop T-Shirt is a good example. Anyone who is into everyday humor will probably understand the idea right away.
It works for casual days and holidays, but it is also the kind of shirt someone could wear whenever they feel like it. It has the same easy attitude people usually want from sarcasm shirts without sounding forced.
It is an easy design to wear when you want something a little more fun than a plain shirt.