Sing. Start singing quietly, but not really singing, just saying the words out load to yourself in such a way that people just think you're talking to yourself. But than gradually get louder, and than start singing the melody. But than get louder, and as you do so just start screaming the lyrics like you've been possessed by the devil himself. Than start thrashing about wildly, lashing out at anyone who tries to calm you down.
No wait... that would be a terrible idea. But it's the best I could come up with. And it sounds like it would be fun, but I suspect that it's a better plan on paper than in practice.