The story begins as Johnny goes to the doctor and they talk, then the doctor gives him a pill and sends him to take a shower before the examination. When he comes back, his dick is standing up from the pill. This is where the xHamster scene begins. The full story is on Faphouse.
As soon as i saw the Doctor my cock was getting erect, i would so love to be given an internal examination by anyone ! Just find it so erotic and sexually exciting....