I once read a post on another forum about a guy who was supposedly commuting home on his bike after dark through a park. As he passed one of the trees, he noticed that there were three men under it: Two standing, with their pants down, and a third, apparently a homeless gentleman, on his knees. The cyclist fellow apparently decided to circle back around for a second look.

Now, I wouldn't have believed this story if I'd just read it. But the dude had taken pics when he passed by them for the second time.