Brewing Deuces - is the action of sitting around and waiting until you are ready to take a dump. Once the appropriate "brew" time has been reached you can go drop your deuce.
After a late night jaunt to Taco Bell the group began brewing deuces while playing video games in hopes they would not all need the bathroom at the same time.
The act of leaving and saying goodbye to everyone in the room at once by throwing twopeace signs up. The act of chucking them depends on the chucker; some throw it to the side, some do the Richard Nixon and some just say "deuces".
Wish I could hang out but I' have to chuck deuces. I'll catch up with you tomorrow. Later