Many years ago we had kit knocked off by the other band on the night, my Fender VI including case was lifted by the guitarist who left a crappy Japanese axe in it's place, his parents were horrified that I might turn up at 2am wanting it back.

On the other occasion we were sharing the stage at Chequers with a very well known heavy rock band who tried to lift half our drummers hanging toms and cymbals.

Sadly it's not always the rag tag that are the bad guys.

On a totally different note, one night we were backing a floorshow at the local RSL and a female singer got makeup on my white shirt that was in the change room backstage ( was in more sh1t than speed gordon trying to explain that one )