She rides me

Marcie straddle me and then dropped straight down onto my cock so hard that if she had been off just a little, I might have required a doctor, but her aim was perfect. I slammed perfectly into her warm, wet pussy.

"Now put a baby in me already," she demanded as she started riding me.

Behind her, Charlie had his cock back out and was stroking it. Marcie turned her head and smiled at him.

"Sandra told me you weren't interested," she said.

"I...never said I wasn't interested," he said as he jerked off. "I just said it wasn't right for me to fuck my own daughter."

"Who said you had to fuck me?" she asked. "Alan is busy with that right now anyway. But I do have a mouth thats not busy."