Xander:  Has anybody given any thought to what this green stuff is?

Buffy:  Hmm, I’m avoiding the subject.

Xander:  I think it’s kale, or possibly string cheese. So, Buffy, how’d the slaying go last night?

Buffy:  Xander!

Xander:  I mean, how’d the *laying* go? No, I don’t mean that either.

Buffy the Vampire Slayer, Season 1: Episode 5 – “Never Kill a Boy on the First Date”