No-No-No-Notorious

While out walking with f00 this afternoon, I noticed a man staring at me. He smiled and said hello in a very familiar way. I said hi back.

"Who is that?" asked f00.

"No idea. I don't think I've ever seen him before."

And then, when we were returning home, I espied another fellow staring at me. I looked back at him questioningly.

"Sorry," he said, "but you're moderately famous."

Uh oh. I wonder what I did this time?