look up any word, like ethered:
When having sex and two parts, for example a stomach and back, press together so all the air comes out from between them and then when you pull away there is a strong suction, usually followed by a fart sound
OMFG, did you just fart?
No, we made a fucktion cup.
by The fucktion cup kid May 16, 2006

Words related to fucktion cup

banging doing it humping omfg sex suction cup