I've certainly laughed at my students' speeches and skits before, but usually they're trying to make me laugh. :)

Today one of my JTEs told me not to teach my kids any more "bad" words (like "gross" and "stinky") so there's no way I'm going to teach anyone "giant wanker." I would have to explain (or demonstrate) what wanking means. Nuh uh. Try again!