Have you ever had to resist the urge to do something like this for no reason....?

So I'm at a movie with friendsl. We're up in the balcony. And this girl & guy we recognize from school sit RIGHT below us. They stick out like a sore thumb. (This is an upscale area and they're both kind of "middle cl.") I wanted so badly to pull a prank... like "accidentally" spill my coke over the side of the balcony onto them. LOL. Or something like that. Not to be mean but just to embarr them. But I didn't do anything. :) Have YOU ever had to resist the urge? LOL.