I agree that this is not a funny prank. A funny prank is one that is harmless and can't result in permanent damage (perhaps the victim is shooken up a bit, but it's nothing they won't get over). While no one got hurt in this incident they very well could have. I'd be furious if I'd been in that theater. It's not a matter of whether or not I'm afraid of snakes (I'm not really), but rather the kind of danger I could have been in. Whoever did it knew very well that someone could have been seriously hurt, and if they didn't know that then they're idiots. It's malicious. If they'd been something like a harmless garter snake then I might think differently.