"I don't know if I want to marry you, or push you around in a stroller."
I think if the teacher in the skit had been male and the student female, it would have been an outrage-- am I right about that? Remember the whole Mary Kay LeTourneau thing? Who is actually warped, here? Or is this actually funny because the opposite sterotype (Lolita type scenario) is such a hackneyed cliche? Or is this just using humour to work out an idea that is awkward and still very much present though unspoken?
I just think in a sauce-for-the-goose world, then if it's not funny in one context, it's not funny in another. Also, in an age in which we've seen another overly-sexualized teen (thank you, Britney) come to adulthood to crash&burn rather publicly, isn't it a little grotesque to play out a tableau in which the child is the sexual agressor?
Or, if you are a flaming liberal, then it's okay for you to invoke the unmentionable. Throw in a literary reference and it's all okay, just like that old man in that famous book by Nabokov.
Come to think of it, don't stand so close to me.