1.
After you get really intoxicated on your substance of choice, be it 33 or Beer or anything else you care to take; you go into a really dark room or a room with some nice blue flashing lights, you close your eyes and turn on heavy trance music. After a while of really listening to the music your body is overwhelmed by an awesome feeling and you enter a dream state. That is a Head Party - works best with 33.
'Duuuuuude I am WASTED - let's start the head party!'
'Fuuuck me mate! Get some munchies and let's head party'
See high, stoned, drunk, alcohol, weed, drugs, intoxicated, wasted, shit faced, tripping
2.
when one girl is with a group of five or so guys and gives them all head one by one.
"dude, i heard shannen had a head party last night!"
See slut, whore, blowjob, hoe, slutbag, skank
