Dirty Thoughts

I have this Aunt who I will call Lisa (Not her real name). Anyway, I've been having some fantasies about her lately. Lisa has been divorced for roughly 10-15 years and as far as I know, from the asshole that this guy was to her, she hasn't dates or pursued anyone since. She's not bad looking, average, actually nice tits and ass. Well, my fantasies lately have been about fucking her, great oral sex, anal sex and face fucking. I daydream about her giving me a nice deep blowjob leading up to fucking her and even pulling her hair while fucking her in her arse. Probably best kept a fantasy, but what's the possibility? Does it happen? It definitely makes me hard thinking about it when I do. Sometimes, even blowing off some steam after.