About T-Shirt Design
There is a nice, simple feel to Best Grandpa by Par, Golfer T Shirt that keeps the joke from feeling overdone. It fits really well with grandpa humor, but you do not have to be obsessed with that stuff to enjoy the joke.
It makes sense for Christmas or birthday, especially if the person already likes this kind of humor. It has that sarcastic t shirt attitude people like when they want something a little more blunt. It has the relaxed feel people usually want from novelty shirts without getting too complicated. The joke is quick, the message is clear, and that is really all it needs.