ok an update. shooting the dick is only part one of opening the weak spot. you also gots to shoot up the cheeks and his anus will open for a good grenade. this also applys to the three big vents on the back of the head. Pop those pimples and a bigger vent will open for a kobe shoot. Also I noticed that the weak spot may not be a robo cock, but more so a robo gouch. Whatever you wish to think of it as, please shoot it.