question about bands performing on stage

Or you wait for the singer to point the microphone at you, and go "fat my pals fat my pals fat my pals".

Or just steal the damn thing. I'd like to see that happen.
 
I remember a metal gig with a local band, when I suddenly meat the eyes of the guitarist we look at each other for like 2 seconds (most gay moment in my life) and then we nod to each other and go into a massive headbanging orgie. (There was a breakdown at that moment)