Beth says that the combination of pleasure from my cock in her ass and the pain from mom pinching her nipples is more than she can take and that she h...s a series of multiple orgasms that just send her mind into a whirl. She never wants it to stop.Even though I can hear Beth crying I know that it is not from me inflicting pain on her. She loves it but we don’t dare tell mom that, neither one of us. I love fucking my sister and doing it right in front of mom is a big turn-on for us both, not to. Now the incident I am about to narrate took place during my summer holidays. In those days we used to stay in a company provided bungalow which had 3 bedroom and the master bed room and the room me and my brother used was a connected via a common toilet which had doors opening on either side into each room. Normally the door of the bathroom was latched from inside from my parents side of the room while our door was kind of close but not latched. In those days when there was no tv etc people. So i after that meeting i told my wife that he is really liking you a lot to which my wife was surprised and that is how that chapter ended there and this was in 1997.In 2003 this friend of mine who is a bachelor visits india and we invited him over dinner at our house where we stay alone as my parents stay in a different city .I came from office that day at 8 and saw that my wife had dressed up nicely that evening , may be she knew that this friend likes him a lot as per his last visit he gave. Someone would need to see about getting one.The other problem was power for regular lighting and security. The house had a burglar alarm. The alarm company was long gone, but the system still made noise if it was set off. The problem was that the battery used for emergency backup on the alarm system was too small. It would only last a half hour without power, worse the alarm would beep whenever power was off. It would just beeep and beep and beep driving everyone insane.Fred, Donna, Beth,.