A girl/boy who watches someone who they are friends with become BEST friends with your best friend but you can't do anything about it.

The Watcher of the Teambang group is the weirdest, creepiest, oldest, dirtiest, smelliest, ugliest, and grossest member who usually sits in the corner masturbating to the human clump before him while simultaneously spewing shit, vomit, piss, and snot in every direction with the occasional blood splatter.

Someone, typically a scrawny white male, who watches their significant other/spouse have sex with somebody else, typically a large black male. Effectively someone who watches as they get cucked.