About T-Shirt Design
Aspiring Retiree T-Shirt is funny without trying way too hard, which is probably why the idea works. It has a clear everyday humor vibe, which makes it easy to picture as a gift or something to wear for fun.
It makes sense for birthdays or holidays, especially if the person already likes this kind of humor. If novelty t shirts are your thing, this one has a simple joke that is easy to wear. 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.