I also did it when I worked in an airport. We had a kiosk outside with drinks and ciggarets and stuff and one morning I got horny and just wacked one out while people were passing by. Thankfully there was a desk between me and the outside world so nobody saw me, but I had a good view of pretty much everyone passing my kiosk. Blew my load and never did it out there again.Used to do it very often when I was in the office. have been doing it less now. I would go in the bathroom, whack one out then be back at my desk like nothing happened.
I was on an empty train once and wanted to blow my load on there, but I decided against it because I had nothing to blow my load into.