"What you did in the car… what I saw you doing," she said in a throaty voice. "I know why you had to. You got excited touching me, rubbing oil on my body. I know how that could turn you on. So… I understand why you had to, you know, jack off."

Derick trembled when she said that. Mandy hugged his cheek tighter to her tit, caressing his thigh now.

"I want you to know something about me, darling," she said, her fingers at the edge of his trunks. "I like to see a boy do that. I love to see a boy jack off. It excites me. I don't know why, but it does, and it's been so long since I've watched that."

Derick remained silent, feeling his mother's nipple pushing at his cheek through the thin halter. Her fingers burned his flesh, and he couldn't stop his cock from hardening.

"Baby, are you embarrassed?"

Derick shook his head, her nipple close to his lips.

"Please don't be," Mandy soothed, running her fingers along the shaft of his swelling cock. "We could have a lot of fun, as long as you aren't embarrassed. You could jack off, and I could watch you, and maybe…" She paused, taking a deep breath. "Maybe sometime I would let you… watch me."

Derick squirmed on the couch, sliding his arm behind his mother's waist and holding her. He wanted to turn his face and taste her stiff nipple, even through her bikini top. But he was afraid to try that, despite what his mother was saying. His cock was now very hard, bulging at his trunks. Mandy was stroking her fingers up and down it, over the cockhead and back again.

"If you enjoy it, you can watch me do it, too," she went on. "We can do it together, watch each other. It would be okay, honey. It wouldn't be as if we… did anything. You know, like put it in me or anything like that. We could just watch each other… you jacking off, and me putting my fingers inside my… down there?"