About T-Shirt Design
If you like shirts that actually have some personality, Smile Emo, Its Not a Phase Tee is a good example. It has a clear everyday humor vibe, which makes it easy to picture as a gift or something to wear for fun.
You could wear it for birthdays, bring it out for holidays, or just keep it in the normal shirt rotation. People who collect funny t shirts will probably like how quick and simple this design feels. It has enough personality to be funny without looking like it is begging for attention.