Blow her of course

The smell of her cum and his juices filled Josh's nostrils. The feeling of his mother's slick thighs on his shoulders and the taste of her precum on his lips was too much for Josh's rational mind. His horniness won out and he parted his lips, placing a long, wet kiss on the head of his mother's erection.

She gasped at his reaction but didn't tell him to stop, feeling her tense up and get even harder was enough encouragement for Josh. He opened his mouth wide and, taking a deep breath, pushed his neck forward to take as much of her into his mouth as possible. From this angle he could only get her about half way in but neither of them seemed to mind. He bobbed his head back and forth with increasing ferocity. He moved one hand to her perineum and started to massage her heavy balls as his other hand snaked down his own body between his legs, stopping breifly to give his own nippple a playful tweak.

His hand found its target and he plugged a couple of fingers into his dripping pussy, causing him to moan erotically into his mother's dick. "Oh fuck" she gasped "do that again". He didn't need more encouragement, he began furiously finger fucking himself, moving his head back and forth in the same rhythm as he moaned into her crotch.

"Fuck I'm close" she exclaimed... Josh hesitated for a moment