Edinburgh, Scotland:

The small print reads:

The person at the side of you.  The crowd at the bar.  They've seen you have a few drinks.  So if you are thinking of driving, don't bother.  Anybody can report you by calling Crimestoppers...

They take drinking and driving in the UK very seriously, so it's good they have reminders, However...When they put the sign above the urinal it is a bit disconcerting...