Rachel makes John cum in Penny's mouth

John was growing more ****, his hips trembling with the effort to not thrust. If she so much as whispered permission in his ear, he would probably cum instantly, flooding his wife's mouth with his hot cum. But Rachel wanted him to wait, to hover at the edge, wanting and hating what he was doing in equal measure.

"When was the last time your wife gave you a proper blowjob, huh?" Rachel whispered tauntingly, as she slid John's cock in to the hilt, stretching Penny's lips wide.

John gave a gurgled response that Rachel silenced by reaching up and kissing him on the mouth. He kissed her back, his cock still throbbing, hilted as it was inside his wife's mouth. Rachel loved the taste of John. The taste of a man giving in.

She broke the kiss, lips wet, and bent down to whisper in his ear, "Cum in her mouth."

John's body jerked. He was trying to hold back, trying not to listen to the seductive succubi atop him. "I... I shouldn't..."

"Do it," Rachel encouraged. "Fill your wife's mouth. She'll never even know."

John whimpered, giving in, and Rachel felt his shaft swell between her fingers. She felt the hot rush of cum travel up through the shaft, and then John's whole body clenched beneath her. Rachel kept his cock steady, trapping him in the heat of Penny's mouth. Spurt after spurt of hot cum painted the inside of Penny's cheeks, coating her tongue. Penny was still asleep, unconsciously swallowing, Rachel made sure to check.

When he was finally done, Rachel drew his cock free with a soft pop, careful not to make a mess. Rachel's hand wiped Penny's mouth with a napkin she'd snagged from the nightstand with the kind of precision one only picked up after years of this sort of mischief.

John looked up at Rachel, awe in his expression. Rachel smiled, her cunt still throbbing with wetness. It was so beautiful bringing a couple together like that.