A group of 5 or more people partying for more than 24 hours.
Generally consisting of mainly males, possibly 1 to 2 females hanging in a friend's garage or a backyard, perched on some filthy couches chain smoking durries talking about how good the night was without actually being able to remember what happened.
Definitely on drugs.
"how was the cookout on the weekend mate?"
"dude it was awesome, ate so many burgers I couldn't even move for 12hours!"
"yeah I saw you gurning on the couch chewing that blokes ear off for awhile"