an emotional state usually combining anger, annoyance, nervousness, or pain, in which the person is generally in a bad mood
She was acting like she had a crab up her ass after she didn't win the prom queen nomination.
This is an insulting and derogatory description for somebody who is very, very cheap. It's believed that crab's asses are rather compact, so someone tighter than a crab's ass is about as selfish/cheap/greedy as it gets.
Jake: Bill by the way, what did you leave our waiter?
Bill: 15%.
Jake: Christ Bill you're tighter than a crab's ass. I have to stop eating with you if you're going to embarrass me like that again in public. That poor waiter worked his ass off you cheap fuck.
a term to call someone a mark ass crab means to basically just insult someone but you wanna say something weird that nobody understands to seem cool
ayo jeff is a mark ass crab.
nigga what?