Peter is seeing Dr. Jordynn LuXXX because he's having wood problems. He's married to a girl who's got small tits. That's causing some issues with the big head which is affecting the little head.
As he relates his tale of woe on her couch, Dr. Jordynn takes careful notes. Then she stands and offers her solution. And you should know what that is. Big tits, a sweet mouth and a tight, wet pussy to fuck.
The finest prescription an attractive, plump, big-boobed doctor could provide. "I am especially talented with my mouth," Jordynn points out. That she is.