Someone was nice enough to get me a new hitachi for xmas. I' wasn't prepared for how powerful it would be and how hard it would make me cum. I had drank 2 cups of coffee, a beer, a Sprite and some water and my bladder was bursting. I was gonna see how long it would take for me to loose control with the hitachi. The hitachi is super powerful and I could feel my vaginal muscles contracting. as soon as I would take it off my clit my muscles would contract again along with the ones aroudn my urthera, letting a few small dribbles out. At one point I place it on my clit again and I am not sure if I squirt a little or my bladder muscles can't take the pleasure and liquid flows out of my pussy into the trash can below. Eventually I have to stop because the contractions were too intense for what I'm used to. It temporarily made me unable to let go of any more of my piss. I take a few seconds to calm down and by that point I was ready to burst. I hover over the trash can and release all of my piss. I couldn't do a fast jet even though I was desperate because my pussy muscles would occasionally contract. But the relief couples with the contractions was enough to make me want to go back and put the hitachi on my clit again and cum. I don't think I've ever came so hard with a toy before. Having to desperately pee and using the hitachi is an amazing feeling