A word coined by Ethan (Unus, crank, The Destroyer) Nestor in a fascinating Unus Annus video of them abusing innocent wooden boards.
Using this world is perilous as there can be many different outcomes.
Example one-gud reaction :)
Guy 1: bro, do you ever look at another dudes buttsack and wonder if you're gay?
Guy 2: Only when I look at your buttsack bro.
Guy 1: *tearing up* bro?
Guy 2: *pulling out a ring* bro
Example two-bad reaction :(
Guy 542873: you have a nice buttsack.
Guy 43366: dude wtf?