I like the "it really happened" type. One year at Newcastleton Festival, many pints ago, we were standing in the hallway of The Grapes catching up on things with friends before the music got serious. My friend Andy had just bought a round of drinks when my father noticed that he was leaning against the bell on the wall. Now where I come from when someone says you're on the bell it's your turn to get a round in. In all innocence father told Andy he was on the bell, Andy protested pointing out that he'd just bought that one. We all saw what my dad saw and caught on, "No Andy you ARE on the bell!" And proceeds to protest massive. The lanlady comes out and says "Excuse me Sir, you're on the bell." We colapse as Andy plaintively pleads "But I've just bought this one, honestly"