Bouncer

n.
  1. One who bounces; a large, heavy person who makes much noise in moving.
  2. A boaster; a bully.
  3. A bold lie; also, a liar.
  4. Something big; a good stout example of the kind.
  5. a person employed by a tavern, nightclub, or other place of public meeting, to eject persons who become violent or unruly.