Up until she was seventy she was just fine and then her legs began to give her trouble and now at the age of seventy five she was a semi-invalid. Mary...had a determined streak and she was very indepentant, but luckily she had good neighbours who kept an eye on her for which she was very thankful. The lady next door a Mrs Drew was particularly helpful and she sent her son Andrew in every friday to get a shopping list from Mary. When they came back from the supermarket Andrew would carry in all. "I really wannna feel your dick inside me" i thought, throbbing and hot."so,what do you wanna do"? he said,finally breaking the silence."I want you to use me like a dirty little slut" i replied,already getting undressed.When i was totally naked i jumped onto the bed and spread my legs wide.My own cock was so hard now as he knelt beside me,unzipping his jeans and pulling out his cock.Hungrily, i wrapped my lips around it and started to suck him off,swirling my tongue across of the head,feeling. And then we would spend the rest of the evening teaching me aboutsex. My inhibitions had been wiped away and there was nothing to shockme, except for the range of possibilities. Sarah taught me things thatI would never have dreamed being physically possible, let alonestimulating. But teach me she did, coaching me through the use of myfingers, my tongue, my teeth, my nose (!), my nipples, how, when andwhere to stroke, graze, caress, bite, pinch. She showed me a huge rangeof 'toys' and how to use. .A few months after our divorce went through, I had moved to the city and was living in a small, two-bedroomed flat that I was renting. It was okay I suppose, just nowhere near as comfortable as our old house had been. My affair with my ex mother-in-law had continued unabated as we took advantage of the opportunities for her to go to the city 'shopping' and instead spend the afternoon and evening fucking me to a standstill.I know some of you will think of me as a hypocrite as I continued to.