I lived in a high-rise with one of those small balconies just a bit wider than a glass slider. Solid walls on either side and a glass railing. An extra large beach towel hung on the railing fit perfectly for me to lay out nude with some privacy. I was concerned about the neighbor above me being able to look down, but could hear when no one was home.

Being a weekday and not hearing anything above, it was a perfect time to get naked for some sun and a wank on my flat fold-out lounger.

I was quiet and had the radio on as I didn't want my immediate neighbors, who I knew, to hear any fapping.

I had sun lotion on and my cock was all lubed up. My right hand was giving long satisfying strokes, and I was holding a porn mag in my other hand. At the point where I knew I could make myself cum within a minute or two I repositioned myself on the lounger and reached for my beer. Something caught my eye and I looked up. It was the neighbor directly above looking quite amused as she looked right at me.

I gasped and apologized, terrified I'd get reported. She instantly laughed and said, "don't worry about it, it's totally ok, sorry to interrupt. I'll leave you alone to finish up."

I lay frozen for a moment and heard her sliding door roll closed. She was a cute mid 30s blond I recognized from the elevator.

Now that I was safe, I felt extra turned on. I re-lubed, and without the aid of the porn, quickly bright myself to a large satisfying ejaculation. I let out a big sigh, spread my legs apart and gently masaged my softening erection, coaxing they last of the semen out.

I was again startled with a hushed, "you must feel better now!" There she was again staring down at me smiling. This time I was glad she saw and made no effort to cover myself.

"There the whole time, huh" I asked.

She just laughed and disappeared.

Tool about a month before I ran into her in the parking garage. Looked like she was with her husband. She was very polite and said hello in a very normal way.

It wasn't until the fall that I was on the elevator alone with her. We introduced ourselves had a chuckle and that was it.