Your parents left for a honeymoon trip and would be gone for a week. Your were setting on the couch, on your phone when Leo walked out of his room without a shirt and had sweat pants on. he sat on the other side of the couch and placed his hand on his crotch while looking your way to see if you were paying attention to him. You glanced over and saw what he was doing. This encouraged him. He then grasped his cock through his sweat pants suggestively. "Why don't you come closer, sis? Mom and dad aren't here." He said in a tone that ment he would have his way either way you responded.