I just smiled watching them. After their short embrace she grabbed me by the arm and led me back into the house for the tour. First place we went was ...own in the basement. It was a big game room, with a big screen, pool table and even a old-school pinball machine."This must be the man cave," I told her, looking around.She laughed, shaking her head. "Actually, this is my personal space. I come down here when I need to get away from everybody. Robert never comes down here," she shared as she sat. But I didn’t know what came over me. I grabbed a dry towel to give it to Joy and deep inside I was yearning to see him naked, even if it be a small glimpse. As I neared the bathroom door I found that the door was not firmly shut.I was about to knock and call out Joy when a deep groaning sound emitted from inside the bathroom. I couldn’t believe my ears what I heard. Though muffled, I heard the words, “Oh Ma I missed you so much.” I pressed my ears close to the crack and what I heard sent. . why she'd want to masturbate any man, let alone her own son; why she'd want to put her little hand around your penis.' She felt his cock beginning to pulse, his orgasm imminent, so stopped and gently pushed him back away from her again.'Eric, was that all you imagined us doing?' His eyes were glazed but with an effort he focussed on her. 'I would guess that you were fantasising about more than that, given that you've been perving on me for weeks and weeks now.' He nodded. 'So what else was. I'd like to think her stepping out is all due to my encouraging. Within a year of our wedding I noticed the sex wasn't all that. I'm not very well endowed and I'm a premature ejaculator. My wife was always extremely understanding and played it off that she was ok with it. I begain telling her about how I would like to have sex with her after she had been made love to. She was a good wife and continued to play that off as it was only my hard cock talking. It was always hard from me to bring up.