Your step-mom brought you in today because now that you're sexually active she's worried you may have caught something. This physical is just to put her mind at ease. Go ahead, show it to me so I can examine it. Oh, oh, that's okay. An erection is a natural reaction to me touching it but I did notice that your balls are extremely heavy and full. I can't let you walk out of here like that. I promise you this is a professional technique. Sometimes it's necessary to suck those balls dry.