Also known as: かかってこい
A confrontational catchphrase used to instigate a fight with another person. It's typically used to convey that one will not physically initiate fight, but is willing to fight if the situation arises.
This meme originated from the 6th episode of the 1st season of Jersey Shore (Series) during which Ronnie engages in a physical scuffle with a person on the boardwalk at Seaside Heights, NJ.