Boot

marine corps term used to describe a recent boot camp graduate. You can tell by their high and tight haircut, yelling out cadences when running/walking, often works out with a camelback, and posts obnoxious stuff on how "motivated" and "dedicated" they are on social media. Will also brag about how they love to serve their country to their civilian friends and cry at the sight of a bald eagle.

Jon: "God damn fucking field day again"
Boot fuck: "Oorah, kill kill, fucking motivated and dedicated"

Jon:"fucking boot"