"Mom?" Lexi asked, suddenly fearful. She wanted it so bad and yet... Sure they'd been fucking for a while. Had fucked. Multiple times. But something about being filled with her brother's cum. Inseminated by her sibling. It seemed like they were crossing another line. Even in the haze of lust and orgasmic pleasure, Lexi's screwed up sense of morality took hold.

"It's OK," Christine said, "Trust me it's better than OK. You're safe. Protected. And your brother's cum? Oh, baby it feels so good. Trust me. I know you're close to a big one. I can see it. Let him do it. Let your little brother get you there."

"M......