It's only after marrying her daughter that he realized how fucking hot his mother-in-law is. She had these amazing curves, big ole' tits and an ass that screamed: "Please Fuck Me". After realizing all of this, he decided that he HAD to fuck her. He decided that he would spy on her while she was in the shower and get caught on purpose just to see her reaction. His plan actually worked better than he could ever imagine. She was deeply in need of a big shaft for her mine.