1. A supremely gay socklike strip of fabric that emo fuckers wear on their forearms.
2. Slang for an extremely gay person.
3. Random name to call someone whom you are angry at.
1: Dude check this fagarmsock I got from Hot Topic!
2: Billy is such a fagarmsock.
3: YOU FREAKIN' FAGARMSOCK!!! YOU KILLED MY INFANTRY!