The Function Junction is a chain of sex shops and porta-brothels located in municipalities in 43 US States, Mexico and Canada. Their tag line is "Function Junction Your Number One Spot for Fucktion Suction."

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life

U.S. Navy expression referring to the conjugal act. i.e. the place where the genitalia engage.