I'm not clever enough to think of a punch line but I love delivering a straight line (usually without trying) and having someone come up with a punch line that makes me laugh. I love to laugh and I think it is healthy to do so.
Example: To impress my nephew with my machismo I told him I had been in the Marine Corps. Before I could fully pronounce the "or" in Corps he came back with "oh, did you work in the gift shop?" (think sticking a balloon with a pin).
The only price I pay for these hilarious moments is that I look like a fool for the moment. It is like I'm the blond in the dumb blond joke. So what? The reward is ten times the price.
So where are you on this topic?
Inquiring mind wants to know.