My one goal in life is to visit Dore Alley. Every September, San Fransisco holds an event called Folsom Street Fair. It is pretty much a sexual free-for-all, and it is not uncommon to see naked men walking around, especially with hardons. And public masturbation is a common site. I want to get totally naked, walk around the fair, and when I get good and boned up, find a place to openly masturbate, just like the guy in this video.
see video at Bator Master’s Blog: My Masturbation Mecca–Dore Alley.