Years ago I worked at a banking tower in Toronto, and right across from us was a condo.  There was a nudist/exhibitionist we routinely hooking up.  Me, my boss and a bunch of my team members would always run to the window to see Naked Guy.

One day, on my day off, I went to hook up with this guy from online.  I go to the condo and OMG it's Naked Guy's building!  and guess what... I found myself going to Naked Guy's condo.  So, with the curtains wide open, I proceeded to suck him and then he fucked me bareback right up against he window in full view of my office.  What a rush knowing thatI might get seen by my coworkers.

I went into the office, and my friend Kathy flat out asked me "was that you"?  I owed up to it.  It turns out 3 team members plus the assistant team leader and team leader all saw me.  My team leader lovingly called me a slut. haha.