In desperate need to use the toilet he enters the bathroom while his sister is bathing. Her request for him to wash her back seems natural, and so is what followed.
Chris' mother had gone to pieces after his father had died, now he was desperate to cheer her up. The method he came up with was unusual to say the least.
My daughter had a serious vaginal rash, I was tasked by the doctor to be sure she got an antiseptic cream applied to her body every day until it was gone.