Genie: “OK, I’m ready for your third wish. “
Harrold: “Third? What about the first two?”
Genie: “Well, this is a little unusual, but after your first wish, you screamed like a madman and said “I wish I’d never made that wish!” So that counted as your second wish, and I erased your memory of both of them.
Harrold:” Well, OK. I wish I really understood how women think. “
Genie: “Granted. By the way, that was your first wish, too. “
This joke is included in the Black Book of Jokes. You can order it from here.