My life revolves around masturbation, but then my dad remarried and I got a stepsister. She's cute, but so uptight that I can't get close to her... To make matters worse, she criticizes me for being "sloppy" because I masturbate too much, and surprisingly, she orders me to stop! I can't stand this! As I'm complaining, she says, "I'll help you quit masturbating!" and decides to take charge of my ejaculation management by teasing my cock...!?