laugh and be a little shocked at the same time, regarding "who would you do?"

It reminded me of one of my all time favorite lines in a TV program. Doug and Carrie (King of Queens) are watching a movie and talking about Carrie liking some Hollywood hunk and they decide it's okay for her to like him and want to have sex with him. They should each have their own little fantasy person. Then Carrie asks Doug who is his secret fantasy person and he says so and so "who does your nails...she's hot!"