About T-Shirt Design
Everyone Loves an Irish Guy Tee is one of those designs where the saying does most of the work, and that is totally fine. Anyone who is into St. Patrick's Day will probably understand the idea right away.
It makes sense for parades or St. Patrick's Day, especially if the person already likes this kind of humor. It has the relaxed feel people usually want from novelty shirts without getting too complicated. People who buy t shirts for the joke as much as the shirt itself will probably get what this design is going for. The whole point is to get a laugh, and the shirt does that without making things complicated.