The bed/couch/etc. where you have been sleeping, lounging, eating, playing video games, watching t.v. etc. for more than a couple of days in a row, without showering or going out. You only get up to use the restroom, get something to eat/drink and then flop back down. This type of situation usually means that there is a definate funk surrounding you that smells something like a fart.
Yo Man, roll outta that fart sack and lets go get some grub!! Shheeeeiit, you been layin up in this fart sack for the past WEEK!!! C'mon, lets roll.
by Booootttyyy-licious February 3, 2010
by victorzulu November 27, 2010
Calling someone this will gain you much street cred. You only call someone you absolutely despise. Like, with a burning passion.
by iCarlin July 6, 2016