2-second rule

Yesterday I was stopped at a light when the man crossing the street in front of us suddenly stopped, picked something up off of the road and then popped it in his mouth. No, I don't think you understand, HE PICKED SOMETHING UP OFF THE GROUND AND ATE IT. And he was just a normal looking guy. Calgary has hundreds of wacked-out guys walking around talking to their hands, but I've never seen any of them eat random crap off the pavement.

Seriously, the best possible explanation is that it was a rock. I really, really hope that it was a rock.