Lacking an adult social life and my own funny stories I like to collect them from other people. It's as close to a social life as I can get.
So here's one I just told my daughter (one that an older friend told me a while back):
We had just picked up our five year old grandson, Tyler, to take him to dinner. He was sitting in the back seat.
"Put on your seatbelt" my wife told him.
"Why?"
"Because if we get in an accident you'll get hurt without it."
"Ok"
Five minutes later we were sitting at a red light, just in front of a crosswalk. A young man on his bike crossed the street in front of us but got his front wheel caught on the curb and hit the sidewalk. He was sitting on the curb, stunned, right by our car. The next thing we know Tyler rolls down his window and yells out:
That's what you get for not wearing your seatbelt!