Morris Schwartz was the oldest of seven children. Unfortunately, he had to quit school and work to help support his younger brothers and sisters. He never learned to read. So, when he married and opened a bank account, he signed his checks just “XX.” Morris then started his own business, which soon prospered. He became a very rich man.
One day, he got a call from his bank. “Mr. Schwartz, I wanted to ask you about this check. We weren’t sure you had really signed it. All these years. you’ve been signing your checks. “XX’; this one is signed with three X’s…”
Morris replied, “Since I’ve become rich, my wife thought I should have a middle name.”
From Oy! The Ultimate Book of Jewish Jokes, by David Minkoff