When a smoker or a compulsive cell phone user continually asks their friends to hold a drink in a bar so that they can participate in the aforementioned activity.
Bar Patron1: Hey, can I bum a hold? I need to light my cigarette.
Bar Patron2: I guess.
Two minutes later.
Bar Patron1: Can I bum a hold. I need to take this call.
Bar Patron2: Really?