I've been an avid masturbater since the fifth grade and I love exposing myself to others indirectly (behind the curtains, open window, etc.) Just last night my neighbor, a late 30's early 40's perhaps was at her kitchen window. Her window is directly across from my bathroom window and room.
I decided to make myself and her both hot and horny and to one day get together and masturbate together. So I went to my room and turned on my lamp and shined it so that I (and her) can see my shadow or silhouette masturbating. I lubed it up with plenty of Vaseline and started stroking myself. I came pretty hard hoping that she was watching. Then I cleaned myself up with tissues.