I used to live in an apartment complex on the ground floor. My wife and I enjoyed having sex with the curtains open in case someone cared to watch. Sure enough, after one long fuck session where I fucked her ass (which she loves) I pulled out in time to shoot several thick ropes of cum onto her back.
The next day, while my wife was out and I was alone jerking off, the phone rang. A woman introduced herself as Jess and said she hoped I didn’t mind what she was going to say, but that she had to take a chance. Jess said she lived opposite me and several stories higher, and that she and her friend, another widow named Rena, had a hobby of spying on people with binoculars, and that they had both watched my wife and I fucking, or me jerking off when I was alone. They reckoned that if someone wanted privacy, they would close their blinds, otherwise they probably wouldn’t mind being watched. I had to admit that she had a point, so I wasn’t pissed, but rather turned on. Jess said she hoped we would not close our curtains. I knew my wife would get off on it too.