Usually a bunch of
people congregating in a stranger's house after a real party or rave ends (or gets busted). Sometimes there's more music and booze, but it mostly consists of random
people in corners coming down off of some good rolls, or having sexual encounters in the
single dingy bathroom.
"
Dude, we can't make the
four hour drive back to Detriot while the
road's spinning like this, we outta find an afterparty and cool down".