When he arrived home he planned to surprise the girls, so he didn’t call ahead. He couldn’t belive this. Sex “Oh! crap, she doesn’t have panties on. What’s that in your pocket? Which had slipped off his boxers and when she opened the zip, sprang out and pointed at her. Mike fell flat beside his suitcase with his little sister straddling him, she had sat right on his dick with such precision. He held her hips to stop her movement. You haven’t rested since you came”
“Yeah, I need some sleep.” He let her up as he lay on the couch not knowing she would just sit right back on him. This was nothing new for Mike, what was new though was the fact that his dick was reacting. I’ll do anything”
“OK, it’ll be our little secret, if you keep your word. He remembered he saying “It’s too big” he thought of how he would bend her over and slide his cock into her tight vagina and pump into it to the very base. Becky had no idea why she had decided to start humping her big brother.