Can be made up of one or more people who show up at protester in masks to hide their real identity. If illegal action happens, look for the crab. When masks are removed they become just a regular old cry baby democrat
Oh great the crabs are here. Time to go home before they burn shit up.
Mrs crabs babies are now all over you after hooking up with mr crabs
Being/doing stupid things
Basically a insult to people that don't understand
Dude that guys a total crab.
Your acting craby.
Don't be playing no crab games.