To take something to the extreme. Mainly used by those of the ricer crowd when they are threatened by rival racers
Man, quit dissin' my Celica before I smack you up the yin yang!
by Eddie the Black March 31, 2004
v. To have anal sex
Barry took Kevin up the yin yang yesterday night, all the screaming kept me awake
by l337 haxx0r April 02, 2004