1. A good sex-partner; usually in the same military branch. A butt-buddy.
2. A sexual partner, especially of the same sex (usually male). The one being screwed wildly in a tag-team buddy system.
3. Friend with "special priviledges", cum-chum.
This being his first week in boot camp, Julio had no idea he would be the victim of the largest fuck-fest free-for-all known in recorded military history.