A brother ends up taking a bath with his sister by chance. What's more, there's slippery lotion in the bathtub! My sister gets so excited about taking a lotion bath for the first time that she goes wild! They start playing around for fun, smearing each other, getting close to each other... things escalate to extremes!! Before I knew it, my sister was feeling good and she was peeing herself! Finally, she crosses the forbidden line in her desire for her brother's dick!!