One of things that has delighted me about the caution signs to date has been the seemingly unintentional hilarity. But, in these two samples, the sign maker is ‘in’ on the joke and they still delight.

In the one above they are advising you on how to keep your head intact while the one below…
Well, perhaps they are providing the same sage advice.
I get why the manufacturers felt English and French speakers were most in need of this warning. The Germans and Swiss are careful by nature, the Italians and Spanish tend not to be so hasty, but what about the Russians? (“He’s Russian.” “Oh yeah? What’s the hurry?”)
In the next two samples, the signs were modified in post production by some clever wags. Below, a street sign in Paris makes a statement about the burden and puzzlement of life by modifications to a Do Not Enter sign…heavy, man.
And here, added text in red sharpie expresses that management has empowered workers to apply the lash to themselves.
Thank you Ginnie for the Helicopter sign, which I suspect came from some super secret military location. And also for the ‘Slap Ass for Motivation’ sign, locale unknown.
Thank you Gilby, who found the Zipper label on Reddit, where once an image he posted claimed the top spot on the proclaimed ‘Front Page of the Internet.’ Meaning that he was, for a nanosec, the King of the World-Wide Web, and I, by parental rights, reigned benevolently (pretty much) as the Queen Mum.
The street sign in Paris I shot myself.
CJ


