Players who scored an impressive kill would then text chat or sometimes rise from their seat and shout Frapthatbitch!, or equivalent, to express their joy at a well deserved kill.
Sometimes used as a replacement for Pwned or Booyah.
* Player 2 sneaks up behind player one and bashes them to death with butt of their rifle
Player 2: 'ZOMG! Frapthatbitch!'