I recently discovered that my step-brother's sperm has the magical property when ingested of making boobs grow to humongous proportions! My new gigantic breasts have made me VERY popular at school, and I have become addicted to having giant breasts. It's been a few days since my last dose of semen and my giant tits have started to shrink a bit, so I come to my step-brother demanding more. I tell him that I don't want him to share his magic semen with anyone else. From now on I will be the only one to get him off, and every drop will be mine. If he is good, MAYBE I will allow my best friend to slurp from his magic stick, too. My horny step-brother agrees to the deal and I slide his cock between my oversized juggs and jerk him off until he shoots a load of that magic nut down my throat. Non-nude clip using punch balloons under my clothes to simulate giant boobs.