The $45 ATM fee you have to pay when you end up drunk in Vegas and take a free limo to a strip club and realize you need to withdraw money from the ATM there.
Rob: "Hey, Peter, this stripper loves me, can I borrow $40 for a lap dance?"
Peter: "Dude, no. They charge a $45 ATM fee here."
Rob: "Come on, please! Peter Pay!"