Originally Posted by V_Ben
the same place every cartoon character stores items. they pull them out from behind their back at any time they want :P
that's the point. it's a parody of all that other cartoon scenes and at some occasions it is implied that he might stuff it in something back there. the way his arm moves would probably make this impossible to do though and the animation really looks like he is just reaching behind his back and not much lower.
the real question is, how this is done in the game? is the model of the gun placed behind his back when he needs it or is it really a part of his body and he carries it around all the time pulling it out through his back?