A man who knew about her sister's sexual frustration. Such a man fucks her in a way that her sister next to him can hear! The excited sister uses the sound as material for masturbation and becomes engrossed in it! Then, after sex is over and he was taking a bath... her sister barges in!! She sucks his dick, begging for penetration. He turns up the water pressure to max, making sure her little sister doesn't find out as she repeats screaming orgasms, soaked to the bone!
