She sat down on the side of the bed. It was impossible to hide the tent my cock was making in the sheet that covered it. I noticed Mom glance at it quickly and then turn her eyes back to me. It didn't help that her robe had fallen open revealing a white nightgown cut low on her generously proportioned tits. I could even see the outline of one of her nipples. My cock twitched.

"I know she's eighteen and a responsible girl," Mom continued. "I don't want to be a prying mother, but I often do her laundry, and lately I've noticed signs that she's become quite promiscuous. I...