... into her with force.
Susan contracted on the tube immediately without realizing, or caring, what the cold object contrasting with the heat of her little brother’s tongue might have been. Her moan rattled the beakers. A soft splash of juices coated Johnny’s face and mouth as her orgasm gently subsided with a few last clenches.
Pulling the slippery test tube out of her and setting it aside, Johnny stood up to face her. Susan blushed intensely and could not look him in the eye. “Better than Gil?” he said spitefully, knowing full well that she had never been with the blonde. Susan frowned and looked away. Johnny smiled evilly and began undoing his pants.
At the snap of the belt buckle Susan looked up at him. Her eyes once again widened in surprise as she watched him take off his pants and boxers. His hard cock popped out, standing at full attention. A small, shining string of precum dripped from the end. “J—Johnny what do you think you’re doing?! You’re crazy if you think I—” he didn’t let her finish.
“I think you’re going to let me do whatever I want. You just let your little brother make you cum and I know you have fucking security cameras in this place. Do y...