Whenever I freshly switch to Moxxi's Good Touch - e.g.: coming out of a menu with it already equipped, or switching back to it after having used another weapon - my controller starts to vibrate. It doesn't stop vibrating until I fire at least one shot. This is extremely annoying, but it doesn't happen with any other gun.
Is this some sort of bug, or is it a known intended feature of this particular gun? Is there any other workaround for it, aside from turning off controller vibration entirely or wasting a bullet every time the vibrations start?