A mathematician came home and told his wife, “sorry honey, but I’m leaving you for my 18 year old assistant. I’ll be home in a few hours and I’d like for you to be gone.”

He got back home and found a note that read,” hi honey, I’ve left and decided to run off with the 18 year old pool boy. We are both 54 years old, and I think you’ll figure out as a mathematician that 18 goes into 54 more times than 54 goes into 18.”