Pretty mom likes to have anal sex with her son when dad isn't home

«My mum had been widowed for 2 years when I went to see her she said I’m desperate for some cock, I was shocked when she said your wife all ways has a smile give me what she gets. Mum I said your 72 what’s wrong with you, with that she sat on the settee pulled her dress up to expose her pantyless pussy glistening with juices and said I want you to fill it right now. I was 49 and was rock hard before my trousers hit the floor. Over the next few months I did several firsts for her. When I told her the reason my wife smiled a lot was because she loved anal and mum said she’d never tried it. I got behind her and rimmed her anus for about 15 minutes and she was begging me to fuck her. I was also the first to cum in her mouth and give her a facial. The biggest surprise was when she was giving me a blow job and rimmed me, she was now 73. I later found out from my wife that they’d been talking and it was my wife’s idea for me to service her. A double first after the revelation was my wife joined us and she ate mums cream pie, an hour later mum ate the wife’s. Mum is now 80 and lives with us and can get enough of both of us.»