The cup formation in the game beruit or beer pong in which the final four cups are placed into the shape of a diamond.
"Bring it on... you can't bust the poontangle."
by Poon guy December 10, 2003
by Poontanglerexpress78 March 31, 2016
A poontangle is a person who’s being a total bitch and has a stick shoved up there vagina so that they are uptight and bitchy
by Soggy January 19, 2018