Sex Therapist Sara has been presented with a difficult case - her patient doesn't cum enough to make his wife happy. She wants more and more cum, but he only gives her a few droplets. Sara has some ideas of how to work out more cum from his balls - sounding, cock massage and - if all else fails - her violet wand to his balls. She works her way through several sounding rods into his shaft, then moves up to the violet wand, working it along his balls and shaft. Will he give show success in his treatment? Will he continue to be a cum failure? How will this science experiment go?