Jerking off in the middle of the day while your sister is home surprisingly doesn’t go well. She walks in without knocking and catches you with your hand around your cock. But instead of being disgusted, she’s a little turned on and decides to tease you. She tells you exactly how to rub your dick, encouraging you along the way. She gives you a countdown so you can blow a nice fat load at her request. This can be our little secret.
