The
act of licking the foam from the inside of a coffee
cup, often compared to a sexual
act due to how enjoyable and suggestive it is.
Guy 1: Dude, how'd you get cappuccino froth all over you face?
Guy
2: Oh, I performed coffee cup cunnilingus a minute ago.
Guy 1: Shit, you got some in your eyebrows.
Guy
2: Yeah I really get into it.
Girl: That's kinda
hot.