My Mother-in-Law's alternative universe

I have many fantasies based upon my Mother-in-Law, J. Mostly focussing on her underwear, her tits. Sometimes though her husband [my FiL] and acquaintances. And often fantasies about me fucking her, or wearing her underwear like a sissy and being fucked. I will start to place these fantasies here. In this fantasy world J is a cock-loving slut, happy to take it in her sexy mouth or loose arsehole. One of the fantasies explains how her arsehole got so loose...