You too Gene?

I encountered a roadie heading the wrong way yesterday. I'm pretty sure he was just "in transition" waiting to cross the road, or heading to a meeting point, rather than a serious wrong way effort, but it's still frustrating.
My favourite was a couple of years ago. Middle aged man on an "ATB" riding towards me in the bike lane with the biggest grin on his face. I pointed to the other side of the road, and called out wrong way, but the grin never cracked....