Update: i (43)walked by my m.i.l. (73) room totally naked from the waist down
Today while showering and getting ready for work I got the idea of walking by my m.i.l. room completely nude from the waist down. Got out of the shower and started strocking it to some pics I have of her. After getting rock solid I put a t-shirt on and headed downstairs for my undies in the dryer. As I was walking down the hall I could see her laying down watching t.v. from the mirror in her room. I strolled by and I could feel my cock bouncing from walking, I looked at her as she turned, looked at me the immediately looked eyes downstairs. Her eyes opened wide as she let out a soft gasp. I walked into the laundry room, put on some undies and walked past again. She gave me a cheeky grin this time. Tomorrow we will be all alone for a good while. I may just work up the courage to do the same but this time walk in to her room.