My Sister's Ex Part 5
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I took Chip’s words not as an exclamation of erotic pleasure, but as an invitation to do more. He began to panic as I lifted my sister’s legs and positioned my dick outside her dripping hole. “Hey, no! Get that thing away from me!” he complained in her high pitched whiny voice. The kind she used when I showed her something disgusting on my phone. “I don’t think so,” I said, and proceeded to shove my member all the way up her wet cunt. It went in so easily, but gripped me tightly, welcoming me, coaxing me deeper. “Aah, it’s so big!” Chip cried, his voice morphing from surprise to pleasure. “Shit, you’re not really her ‘little’ brother, are you.” I could tell he was trying to make up his mind whether to stop me or not. The more I thrust, the more he seemed to want it as much as I did. “I guess, ah, you can keep going since you’re already in there. I’ll even help you finish. Watch as I suck her titties.” He hesitated, then continued, trying to take on her persona. “Mm, give it to me BIG Bro.” The effect worked. As she lifted her boob to her mouth, I forgot Chip was in there at all, and I proceeded to fuck my sister hard.