Senser at the Joiners in Southampton a few years back. if you know the Joiners, you'll know it has no stage entrance and the band have to walk right through the crowd to get to the "backstage" area.
the band finishes the set and Heitham says "erm, normally at this point we'd go backstage and you would beg us to come back out and do a couple more, but we can't really go anywhere, except down there i s'pose" pointing to the steps at the side of the stage down to floor level "and then they'd need to turn all the lights out so you couldn't see us, you don't actually want us to do that do you?"
obviously the crowd did want this, so the entire band, all 6 of them, troop down into the little corner at the side of the stage, the lighting guy turns the lights off for a couple of minutes and the crowd chant for the band to come back, all the while the band are just about visible in the gloom laughing before they come back up on stage and finish the set proper.
it is a delicious rock n roll cliche though, New York Dolls played The Talking Heads in Southampton last week and given the same layout as the Joiners, their idea of "backstage" was out the stage fire exit into the freezing cold carpark for five minutes.