I once won an 'Award for Dramatic Expression' at school.
And yep, it was for belching on cue. Yes, I know, how classy... :/
But anyway, it was warranted - in the play we were reading, a Patrick White one if I remember rightly, the belch was right there in the script. So I was just doing what it said in the book :)
Two out of three people wonder where the other one is.