Mom can only cum from thinking of me

I decided on making it so the only way that my mother could cum is thinking of me or having sex with me. It would only be a matter of time before the frustration would be too much and she would give in. All I would have to do is wait for that to happen and to possibly help it along. Tonight was date night for my parents and I knew that was when they would have their weekly session of sex. Through the thin walls I heard them at it many times, sometimes jerking off to it and imagining it was I who was pleasing my mother. If things went the way they were supposed to this would be the most interesting night in a long time.