Verb. In Gears of War, to steal a down that is clearly not yours. To deal with a habitual flipper, his or her team boycotts them and leaves them to deal with the enemy team in its entirety. After the abandoned flipper gets killed, the round resumes.
TB: Holy fuck, did you see that?! I downed that COG with the Boltok from fifty feet away and some fuck ran across the whole map to take the kill.
PHLEX: Ya' got flipped! Some real CBS type shit right there.