What’s the most amusing/ridiculous bit of smut based dialogue you’ve ever come across (or written if that qualifies) as a serious purveyor of serious fiction?

Hmm, one really good one I came across recently (in a published book no less) was “he feasted on her breasts” in an otherwise pretty vanilla sex scene, because it was just so silly.

But since you asked for dialogue specifically, I’d say it was something I read a good while ago (I don’t even remember where anymore, some fanfic from back in the day), in which a character said something to the effect of “give me your sex milk in my hungry hole” or something equally insane and objectively not sexy.