“Easy! Your cock’s bigger and longer than I thought it was. Go slow till I get used to it.” She was still holding her hips apart.
“Mom, it’s hot and tight. I’ve never been in anything this hot or this tight before. It’s tighter than any pussy in the world.” He pulled his cock back slowly, marveling at the sensation of her sphincter rolling up his prick.
“It’s good for me too, son. It would be better in my cunt but it’s good. Move a little faster if you want to.”
Billy moved faster, but only a little. He was afraid he’d shoot his load and go soft if he moved too fast. But then again he didn’t want to move too slowly, he wanted it to be better for Betty than he’d ever made it for anyone.
As Billy pushed his cock forward he found that it moved into a tight area just before he reversed his stroke and pulled back. Betty seemed to flinch, to pull away from him at that point. He also sensed that her asshole was secreting a slick fluid similar to that produced by her cunt and he was moving easier although her ass was still tighter than even Joan’s cunt. He moved faster, ramming his cock into the tightest part of her bowels.
“Oh, that burns a little. Do you think you could get to me if I was on my back?” asked Betty.
“If you had your legs up I think I could.” He was still plunging his rippled cock into her, not easing up until she made up her mind about turning over.
“Let’s try it, honey. Let me get on my back and put that pillow under me.”
Billy pulled his hard cock slowly out of her tight asshole. He moved back to give her room and watched her turn over and work the pillow under her hips. When she raised her legs he moved back up against her and guided the head of his slippery prick to her puckered anus again. He put his weight behind his cock and it slithered once more into the slick, tight heat other bowels.
“Oh, yes,” said Betty as she blew out her breath. “This is much better. Fuck me, son. Fuck your mother’s asshole.”
Billy started pumping, pounding his hard cock into Betty’s slick shitter with the same confident strokes he’d used on his sister’s cunt. He was blissfully aware of the added heat and tightness of this hole and tried to compensate by thinking of the times he had failed to get his cock between girls’ thighs when he dated, to keep from coming too soon. But he was brought back to reality when Betty spoke.
“This is good. Every time you push your bumpy cock into me it shakes my cunt. I’m already coming, Billy. Do you feel the juice running down to your cock? Do you feel my pussy juice running down to slicken my asshole.”
“I feel it, Mom. I feel your asshole squeezing my cock, too. All those little rings in your asshole are trying to milk my cock. It gets harder and harder every time I push it in. I’m going to come in just a minute,” said Billy, not missing a lick.
“I’m coming again myself. Go ahead. Shoot your cum up your mother’s ass. Juice my guts good.”
Billy pulled his knees forward and spread them. He twisted his back and bent his neck and took one of Betty’s erect nipples between his hungry lips. She wrapped her slim fingers around her first tit and squeezed, making the nipple stand up even more. Billy opened his mouth to cover the whole dark circle and ran his tongue around and around the hard titty tip.