@wishlish I'm sure they're all over the globe, but in Australia it's not uncommon to see "DRUGS ARE BAD MMKAY" or similar printed onto the small plastic splashguards commonly found in urinals, usually in a bar or pub. It always amuses me to ponder whether even once, in the entire history of these existing has the following scenario played out:
A man stumbles into a bathroom, a little drunk, looking forward to shooting up the horse he's just bought, when he realises his bladder is bursting and that he might piss himself if shoots up before taking a piss. He stands above the urinal, and while releasing his bladder he glances down and sees "SAY NO TO DRUGS" printed on a cheap piece of plastic with a primary purpose to stop piss splashing on people. Seeing this message, the man decides. Actually today is the day. TODAY I GIVE UP HERION.