This story is a continuation of the same visit to my mother-in-law's place over Xmas where our stay was just short of three weeks.
After the saga with the underpants and security tag, things became quite liberated for me. I was able to walk from the shower to the bathroom naked, without a towel. Both my wife and mother-in-law seemed to approve of a naked man casually walking around the house. Don't get me wrong - I didn't go out of my way to flaunt and didn't try to linger too much.
In swimming (which I was growing to enjoy more) I could peel off my trunks and feel the cool water all over my cock and balls. If my wife was in too, there would be incidental brushes against her and some playful touches from her in return. (She always kept her bathers on and I tried to always be in the water in case any neighbour could see over the fence).
I even went for a naked run on the treadmill for the hell of it but my dick flopping around was counter-productive and there was no one to see as I was in the garage anyway.
In the evenings while on the couch, my wife would stealthily play with my cock through my boxer shorts. If my mother-in-law went to get a snack, my wife would pull my cock fully out and have it standing rampant. Despite mother-in-law seeing it in all its glory before, my wife was careful to put it away and go back to gently touching when her mother returned.
One evening after a few wines (isn't it always the way?), with just my mother-in-law and I on separate couches, she started talking to me about how she used to enjoy sex and missed having a man in her life. She often started discussions by going off in a tangent but this was the first time she had spoken to me directly about sexual matters. Her language became more pointed as she would say she missed being, "regularly serviced by a man" and loved the feeling of being "filled with a man's hard member".
Things stepped up a notch one morning when my mother-in-law had her weekly cleaner around. My wife was still asleep and I was naked and about to jump into the shower. My mother-in-law was chatting casually to the cleaner while sitting on a dining room chair. She spotted me and waved me over to introduce me. I walked over and the cleaner's eyes widened as she took in this naked man walking towards her.