Sure, Step-Mom gave you the sex talk, but that's as far as decency would allow her to go. But it's not enough. She resents not being able to teach you how to masturbate, she is your step-mother after all. So she has her magical friend turn her transform her into your girlfriend for an hour, just so she can help you masturbate. To you, it just looks like your girlfriend wants to watch you get off, but is it your girlfriend after all? STEP-MOMMA'S BOY - JOI - TRANSFORMATION