1. A sock that is used as a temporary contained for faecal matter.
2. A vital part of any dedicated EverQuest player's equipment. A poopsock eliminates the need to go all the way to the bathroom, which wastes valuable levelling time.
3. An insult used to refer to an obsessive MMORPG player who gains an unusually high number of levels in one day.
SpawnSlayer13 is such a poopsock. He got from level 1 to 60 in the space of a day.