A term in the military, particularly the United States Marine Corps that generally describes a Marine who gives ZERO shits about anything and/or close to ending their military service.
Boot Cpl: Hey Lcpl Shmuck, Ssgt needs you for a working party.
Salty Lcpl: Fuck you, go do it yourself you POG ass boot.
Boot Corporal: Aye Aye Lcpl.
Salty Lcpl: "Puts on shades and drives off into distance"