the chilled out relaxed after-'party' usually with a handful close friends after a bigger party and/or clubnight
can last way into the next day, often involving lots of alcohol, naughty illegal consumables, something funny/trippy on the telly and lovely afters music
"hey man, what are you doing for afters?"
"afters at yours, yeah?"
"fucking love me some afters, best part of a night out"
"save some of that ket for afters mate!"