Suddenly, the younger brother is asked by his older sister to take a bath together. But the bathtub is not just filled with water...it's filled with slippery lotion! The older sister's excitement is at its MAX when she first bathes in lotion! They smear each other with it, get in close contact, and play with the lotion! And before she knows it, the older sister is feeling good and pees herself! Finally, she starts asking for her younger brother's dick and crosses the forbidden line!