Mother in need of sex allows her son to stick his cock in her pussy

This boy knows that his mother is in need of sex because she divorced a couple of years ago and before she was the typical whore who was always grabbing her husband's cock to get her milk. So one day he finds her naked in bed, what she does is go for her pussy and disregard anything that could happen. The mother is scared, but she also wants a cock, so she lets the son follow his own to see what he is capable of. He fucks her from behind grabbing her ass and the mother runs as long as she had wanted to do.