The Heavy Weapons Guy is a defensive class in the hit game, Team Fortress 2
. His weapons are the Natasha, a high powered chaingun that fires custom 2 cartridges, the Sasha, a smaller version that slows enemies, a shotgun, a sandvich, which heals 120hp, fists, and his KGB (Killing Gloves of Boxing)
His main purpose is to be an iron curtain, standing on control points and spraynig wildly at opponents who dare to get near. He is most deadly when paired with a medic to boost his health.
In context it can mean that someone is Russian, Brutish, Fat, or someone who like large weapons