With my wife out shopping for a couple of hours, I thought it was a good time to take a brisk canter with my trusty steed. Cleaned up, lubed, and inserted, only having the slippery dickens shoot out once this time. It only took a couple of minutes before my anal sphincter was nibbling at it by itself. Tried the trick of telling it to move from one side of the prostate to the other, and having it obey without trying...