This troper invokes these tropes:
Limited Wardrobe: Jeans and a t-shirt for at least the last 30 years. Even his wife has noticed this from older pictures. He has a t-shirt that is 12 years old!
Rule of Funny: He'll go to almost any length to get a laugh, no matter how dumb the joke. His wife is trying to break him of this habit. He's getting better.