Barely Out Of Training. Any Marine who has been out of training for less than a year. In combat MOS’s, especially, one must complete a deployment to rid themselves of that title. Can also be an adjective to describe when someone who may not be a boot is doing some really boot shit. In some cases, those people can become “perma-boots” and maintain the title of the lowest scum on Earth.

Hey boot! How about you clean my fuckin’ room and pick up all the cigarette butts in the parking lot while I get drunk and haze other boots before that POG ass Sergeant gets back with his boot ass haircut and tries to act like he’s actually in fucking charge. Aye, aye, Lance Corporal, or some shit!