Not a bad place to draw the line, I guess.

Three people, one guy, two girls waiting for a table at a downtown resturant.

Girl 1. That waiter is hot, I'd go down on him.
Girl 2. Me too, he's yummy.
Guy. I'd give him a hug.
Girls laugh
Guy. I'm trying to be a metrosexual but I draw the line at oral sex.