You smile as the tingling sensation centers around your crotch. You knew Jessica was hungry for cock, but you didn't know she liked hers BIG. You watch as your dick becomes soft, making you wonder if she was about to pull some freaky shit. Your fear is alleviated, however, as your dick begins to grow at a steady pace. You stand in front of the mirror and watch the magic happen.
Your dick grows longer and wider, soon reaching the foot long mark. You smile at the change, for your dick had always been at what you guessed was average length (you never felt the need to measure). But this was a pleasant gift from your step-sister, making you wonder if she was so horny from not being able to orgasm or just was hungry for his cock. Your thoughts are quickly replaced by a sudden urge to walk to Jessica's room.
You feel yourself walk towards her room, but you didn't make yourself move. "This must've been what it was like when I commanded her to suck me", you think. You walk into her doorframe and stop, being greeted by a wonderful sight. Jessica is sitting on her giant ass, with her large legs spread. You see that the wand is in her hands, being flicked between her fingers. She smiles when she sees your foot long dick, and waves the wand.
You look down as the tingling feeling begins again. Your dick continues to grow, reaching lengths that a pornstar would kill to have. Two feet, three feet, four, five! The numbers go by as your dick lengthens and thickens, finally stopping at the fifteen foot mark. You start to rub your dick, trying but failing to wrap your hands around the cannon-thick dick. Jessica waves the wand again, and you get a massive erection.
You notice that you are able to move on your own again, and walk towards her. She embraces the tip of oyur dick and licks it. You squirt a little due to the sensitivity of your dong, and she giggles. Holding back your cum (which never runs out thanks to your previous wish), you think of a few things to do.