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.
23👍 30👎
The cover sheet on your mattress.
When doing the laudry today, don't forget to wash the fart sack.
15👍 18👎
Calling someone this will gain you much street cred. You only call someone you absolutely despise. Like, with a burning passion.
Jack - i hate you billy, you ugly sack o' farts.
Billy - aw.
Ashley - ur so cool Jack.