re: What's the most disgusting thing you've seen someone do in public?

Back in '84 or so I was killing time waiting to get some slidefilm developed on Magazine Ave at Delta Photo works.

I was stopped at a red light and this crazed looking black female with a mint green terry cloth tube top romper comes out of no where, walks to the middle of the intersection, squats right in front of me, pulls her romper to one side, bears her roast beef curtain and proceeds to piss like a race horse in the street.

Still a vivid memory.