MIL saw what she wanted to…

A while ago I [m26]was at a family event at my wife’s cousins house. They are from Finland so there is a sauna at everybody’s home and we usually will use theirs when we are over, this time was no different as my wife, her sister and husband, her 2 cousins and myself enjoyed a sauna together after dinner, we had swim suits on and when we were done everybody rinsed off and exited into the change room outside the sauna. I stayed later as I wanted to soap up and shower after they had left.

After few minutes after they left I rinsed myself off and took off and folded up my shorts, got out of the sauna into the change room and started soaping up my body, right as I was lathering my cock and ass the door flew open and there was MIL 55 with her towel coming in for a quick sauna and shower herself. They must not have told her I was staying to shower but at this point I was just coming out of a long sauna and tugging on my soft sagging cock and balls and I could see her heart stop when she saw it. She didn’t say anything and hung up her towel, dropped her sweatpants and took off her shirt and entered the sauna in her bra and panties. I finished lathering myself up and it was time to join her in the sauna where the showerhead is to rinse myself off, as I opened the door she was sitting there now completely naked on the top with her legs spread so that when I walked in the door I was almost eye height with her hairy pussy and her giant G cup tits hanging just below her belly button. Her pussy looked like my wife’s. I could feel my cock start to twitch. I asked how she was doing and turn the shower on, to which she replied “you have it so hot in here I love it” as I stepped into the water.

As I rinsed I could feel her staring at my naked body and I couldn’t help get hard. I could feel my penis get thicker and shake with every pulse getting harder every time. It wasn’t long before I was standing there with a full hard on while my MIL watched me rinse off in the shower, leaning over letting her massive tits hang above her knees.

Being slightly embarrassed of my raging hard on I said “sorry I don’t get to show off much” and started to leave, she said “thank you I appreciate the show” and stayed in to finish her time. I dried myself off and made it back to the rest of the crew, but if MIL is anything like my wife she grabbed that shower head and got herself off 5 times as soon as I walked out and I like to think that’s where my wife gets it from…