She asks for a meeting with the bank manager to set up an account. She explains that she wants to deposit five million dollars.

The bank manager says “If you don’t mind my asking, where do you get all of your money?”

The old woman says “I’m a professional better.”

“So like sports betting?”

“That too, but also personal bets”

“How so?”

“For example, I will bet you $1,000 that you have square testicles.”

The bank manager laughs and says “I’ll take that bet!”

They shake hands and the old woman says “Just let me call my attorney. I’d like to have him present anyway when I open the account.”

Soon after the attorney arrives. The bank manager, a little embarrassed, but wanting to win the bet, pulls down his pants. The woman cups his testicles “I stand corrected. They’re not square you win.”

The manager pulls up his pants, and the lawyer starts banging his head against the wall. The manager says to him “I’d feel the same way if my client threw $1000 on a silly bet”

The lawyer says “No, it’s not that. You see, she bet me $10,000 dollars that by the time the day was through, she’d be able to hold you by the balls!”