Keith and I had been chatting online when the subject of the lovely weather and how he was missing the country walks he used to have when he lived her..., anyway I cannot remember what brought up the subject of walking naked but he said he was thinking of driving over on the Friday for a walk at a place he used to go to a few years ago, I think he jokingly asked me if I fancied trying it and I just laughed it off.Over the next day or 2, I gave it some thought(too much to be honest, lol,)and the. I felt his cock expand then explode deep inside me, setting off a chain reaction with my pussy muscles. I’m too far gone to care that I’m getting a pussy full of seed from my son and keep my fanny wrapped tight around the base of his cock, milking every last drop of cum from him.My bosoms are hot and sweaty with him breathing in to them and my fanny feel like its going to explode with the amount of cum he is pumping in to me. I needed that, a good seeing too, but not with my son, eventually. He was watching her with undisguised anticipation, so she winked at him, then guided it into her mouth, barely fitting her lips around the head. Once they were, she slowly worked her lips up and down the thick length, swirling her tongue all around and along it while she did. Her teacher was leaning back, evidently enjoying her ministrations. Pulling her lips from near the bottom of the erection, she sucked hard as she brought them back to the tip – he swelled impossibly bigger and thick sperm. She sure proved me wrong on this visit. It was very cold on this night and since the house didn't have central heat we all went to bed and bundled up good in heavy blankets and quilts. I was feeling horny but my wife was having her period and didn't want to make a mess so she wouldn't let me fuck her. I tried to get her to give me a blowjob but she said it was too cold to get out from under the covers.I turned over and went to sleep with a hardon that wouldn't die. I awoke some time after.