I saw my wife going at it in the tub and had to join in
One day I came home a little early and looked around the house for my wife. At first I didn't see her, but then thought to look out the back window and saw she was in the hot tub. I almost turned away to settle in, but then noticed she was positioned with her back arched and face pointing toward the house with eyes closed . . . she was getting off in the tub!
That was hot! Suddenly I had a raging hard dick in my hand and knew I had to join in. I stripped off all my clothes and headed outside. As I approached the tub I could see her eyes were still closed and I didn't want to startle her so I stayed quiet and started wanking a few feet in front of her.
She was obviously enjoying it and seemed to be getting close from her expression. I was quickly getting there myself and wasn't going to last much longer. As I could feel the climax getting close, she must have finished as she opened her eyes and rather than being startled at me rubbing my cock a few feet away, she looked pleased and immediately called me over to the tub.
I obliged and she took over for me right at the edge of the tub. She kept pumping until I finally spewed goo, which she was quick enough to get her mouth to before I even launched my second rope of cum.
I now check the back window whenever I don't see her in the house to see if she is using the tub again.