1. annoying mobs(baddies) found in video games.
2. an annoying, lazy, or ugly person.
3. any decapod crustacean that agitates you.
The term more commonly used as "crab," can be applied to a variety of situations.
During a video game:
-Slay that crab.
-God! fuckin' crabs.
-A phone rings...call is ignored
person a: who was that?
person b: some crab.
-"Dude did you see those crabs in the car ahead of us?"
At the beach:
-"fuckin crab nigger tryed to pinch my ass."