About T-Shirt Design
The joke on I Kidnap Trick Or Treaters T-Shirt is easy to understand, and that is a big part of why it works. Anyone who is into everyday humor will probably understand the idea right away.
You could wear it for casual days, bring it out for holidays, or just keep it in the normal shirt rotation. It has the relaxed feel people usually want from novelty shirts without getting too complicated.
Fans of sarcasm shirts will probably like that the joke is direct and not too polished. It feels casual enough for normal days but still has enough personality to get noticed.