The word is....

Is 'fed up' slang?

Never heard of it?

The other one was at our local garage, and my French students always wanted to have their picture taken behind it 'Air con £60' - they would make stupid faces and say they could have it for free (avoir l'air con = looking stupid (the actual word meaning 'twit' with a vowel change!!).

Heavy Plant Crossing always makes me think of triffids...

Heavy Plant Crossing is one of my favourites too, jura. I always imagine trees shuffling across the road. One of them stops and holds up a crossing lollipop until all the wee saplings are safely over

yes, nag, or the ents in Lord of the Rings.

I also like the instruction that used to be on jar lids
'Pierce with pin and push off!' where to?

Bags - I am glad even the 'natives' find the 'heavy plant crossing' funny. Imagine what it feels like for a 'furiner' who is new to the language though

Or 'Slow old people crossing'.
The best sign is on the M62 and just says 'Do not throw stones at this sign'.

I liked the one outside Birmingham that said, ' to Pink Green only' honest!

I like "cats eyes removed". (The poor things!)

To save any misunderstanding, this was an actual road sign on a road that had just been re-surfaced!!

Hah Ha..that reminds me of the horrified look on my daughter's face when I was on the phone hearing news of a new cousin and I said 'Oh@, Clare with no i'

When my DS was v.small we were going up an escalator and he asked what would would happen if you couldn't find a dog. I couldn't begin to understand what he meant and asked him to explain. He pointed to the sign that stated "dogs must be carried"

Mamie The envelope that is so often pushed by politicians and other users of endless clichés has never been stationery. If you think about it, why on earth would you push a paper envelope and what would you expect to achieve? It's actually a piece of slang to do with aerodynamics – although one wonders if politicians and other users of endless clichés are aware of that.

I know absentgrana, but at least it made everyone in the meeting laugh when I said it!
I also remember one meeting when we were told to keep shoulders to the wheel, noses to the grindstone, ears to the ground and heads below the parapet. I am still trying.