His dick almost slips in

The car ride got bumpier as they got down the rode, and Alex's mother shifted her position, almost grinding against Alex's cock. He resisted the urge to grip her thighs, his cock in-between her ass cheeks still.

That was until they hit a particularly large bump which made Alex's mom come off his lap and and fall right back on to it. When she landed, she felt Alex's dick slide inside her panties, catching it back vertical along her butt crack.

She gasped, and leaned forward a little more, his dick now snugged inside her panties and luscious cheeks.

Alex could curse at himself for this if he wasn't to turned on. It didn't help his mother was beautiful and young when she had him.

She had a nice thick hourglass figure, and he moved his hands to hold her waist steady, keeping her from moving and pushing him into her.

"Mom... You you move more, it could go inside. I'm going to hold you here, and try not squirming."

"Okay, honey. I'll try sitting still, I don't want my son inside of me." She held still in position, her breathing was most of her movement.

Alex sighed a bit in relief.