One time at an open mic a guy wandered onto stage and ripped my mic off of my stand (as in every part of the stand moved from him taking the mic out the wrong way). Luckily, nothing was damaged, even the clippy thing, however I was especially not happy because I had the tube for my talk box carefully arranged (some of you know what I'm talking about). But anyway, I was too far away at the time to do anything but watch in horror with the host drummer (wasn't our turn to be up). The guy who did it was a regular; when I went and put the mic back on the stand I gave him a look which said "it's ok this time, but you know better now, so next time you're a dead man. He hasn't bothered since.