At my new bank standing in front of a bank teller working out a transaction...
Bank teller: "I'll just need to see some form of ID and have you answer a few questions." he says. "And a blood sample." he adds, jokingly.
Me, without hesitation: "Well, that's less than what my former bank asks for."
Teller, without skipping a beat: "Your first born?"
Me: "Yep. That's why you're my new bank and they're my old one."