I'm your big sister and I call you into my bedroom to play. You say we are too old for that but I tell you there are games that grown ups play and offer to show you. I lean forward, showing you my cleavage and notice that you get a boner. Are you getting hard for your big sister, little brother? Why is that? I tell you that we're going to play show and tell, but with our private parts, our little secret. I take out your cock and suck it, giving you the best feeling of your life. You can't believe your own sister is doing such naughty things! But it feels too good to top. She bends over, showing her ass, and peels off her thong so you can see her pussy and asshole. She spreads her legs and says you can fuck her, she will show you how, but you have to pull out when you cum and cum on her pussy, not inside!