A horney male soldier in the field or on deployment that can/will not get sex from a female, and rolls up a sock nice and tight like a vagina and proceeds to have "relations" with it.
Soldier 1: I walked in on SSG Kennedy, and he was fucking a damn sock!
Boys who enjoy yaoi (a genre in Japan that contains sexual and/or romantic relations between two men); literally translates to "rotten boy"; corresponding female : fujoshi