I fantasize about my MIL
My MIL is a large lady. She hasn't had s** in at least the 20 years my wife and i have been married. She lives with us now. Sometimes i think she flirts a little when my wife is not around. I have caught her a couple of times walking around the house with no bra and her nipples are obvious through her thin shirt.
I fantasize about planting my seed in and on her. I have thought about a hidden camera to see her naked but feel guilty for thinking about doing that.