Your girlfriend's best friend comes over and insists on having some one on one time with you while she waits for your girlfriend to arrive. She's so hot, you've always wanted to fuck her, and something in her smile says that she knows this. She starts stretching her beautiful body, teasing you, and you immediately get excited, She notices the boner in your shorts and tells you that there is no reason to be shy, and insists that you start stroking your dick for her. You oblige, happily, seeing how excited watching you masturbate makes her. Moments into your self pleasure session you feel funny, and look up at Freya who's laughing at you. She confesses that she has casted a height transference spell on you, and now every time you stroke your dick you will get smaller, she will absorb your lost height and get taller. Once she grows to her true height she plans on face fucking your girlfriend with her new, thick, tongue! Resistance is futile, you're already under her spell, mindlessly stroking for her, and it feels euphoric to give this Goddess every inch of your height.