Sally blinked, then coughed. "What?" she said. "Percy? What happened, Sweetheart?"
Percy laughed with relief. "I think you just had a really big orgasm, Mom." He started raising and lowering his hips again, fucking at a faster pace.
"What Percy?" Sally's eyes scanned around the darkened room. "What time is it, Sweetie? I can't seem to-" Then Percy made an especially deep thrust, and she caught her breath. "Oh, that feels good Sweetheart." Suddenly her eyes focused on his face. "Percy? Are you fucking me?"
"Yes Mom, I'm fucking you." Percy was pumping faster now, his breath deepening.
"Have- have we been fucking for long? I can't remember... Wait... I think it's coming back... Was tonight- is this our first time, Percy?"
"Yeah Mom. Our first time fucking," Percy gasped. "I love being in your cunt, Mom. It feels... fucking... amazing!"
Sally brought her hands up to Percy's back and ass, pulling at him. "My god, what an orgasm you gave me, Sweetheart!"
Percy grinned down at his mother and then lowered his face to hers, kissing her on the lips. His back was arching and flexing as he drew his cock out of her cunt and thrust it back in.
"Oh, Percy," Sally sighed when their lips separated. "Your cock feels so wonderful. I've always wanted you, Sweetheart; did I tell you that? Always wanted you just like this, in my bed, between my legs, lying on top of me, your cock inside me..." She paused to kiss her son again, and then continued, her words coming between quick, gasping breaths. "Are you going to come, Baby? Are you going to come in your mommy's pussy? Are you going to shoot inside me, Sweetheart?"
Instead of answering, Percy began making raspy grunts, synchronized with rough, slamming thrusts of his cock into his mother's belly. These grew louder and louder, until they were like throaty roars, finally culminating with one long, shuddering rumble coming from deep in his chest as his body convulsed in a rapid-fire series of thrusts that jolted Sally's body, driving her ass down into the mattress.
"Yes, yes, yes," Sally chanted, clutching at her son's buttocks, her eyes closed tight, her body shivering through its own orgasm. "Give it to mommy. Give it all to mommy!"
When Percy woke the next morning in his mother's bed, Sally was already up. He got up himself and went into the kitchen, his erect cock leading the way. Sally was at the counter, spooning coffee into the coffee maker. She was wearing a heavy, floor-length bathrobe. Percy came up behind her, hugging her and reaching one hand inside her bathrobe to cup a breast. "Good morning, Mom," he said, kissing the side of her neck.
"Percy," Sally began, taking hold of her son's wrist to pull his hand away from her body, "we need to talk."