Ass Crowding 

Usually used in basketball to either steal the ball or get a rebound. Every teammate will crowd underneath the hoop, hoping to get it.

Here goes the Lakers using the ASS CROWDING method.

Ass Crowding by yayerdude123 September 12, 2011

Ass Crowning 

Sticking your head up a huge anal cavity (Scouse)

Do you want to be my Queen, if so I need to be a king so bend over bitch I'm gonna do some Ass Crowning tonight baby.

Ass Crowning by Haruspex wow August 10, 2018