A slang term for penis. This can be considered a weapon, since using it has consequences; sometimes minor, sometimes severe. It can damage or build your reputation, depending on what you are speaking of (ex: your sexual performance reputation.) In unusual or strange incidents, it can poke someone's eye out.
(On there way to the local strip club)
Soldier 1: Hey, Lieutenant!
Soldier 2: Yeah?
Soldier 1: Bring your weapon (smirks)
Soldier 2: I got it right here (grabs crotch.)