Nice quiz. Not sure I get the "London underground" one. Does that refer to the gap between the train and the platform? Is London notorious for having a particularly hazardous one? Isn't any potential gap something to be minded in any subway?
Whenever you go on the Tube you are told by the tannoy to 'mind the gap', the phrasing and intonation of which has somehow gained a certain fame. I have to admit I wouldn't have thought it exclusive to London, indeed I'm sure it's said on the overground railway all over the country, but I imagine international tourists know it from London alone.
(Also, from Wikipedia: "The phrase was first introduced in 1968 on the London Underground in the United Kingdom. It is today popularly associated with the UK among tourists because of the particularly British word choice (this meaning of the verb mind has largely fallen into disuse in the US).")
Brit here - it really is quite specific to the London Underground. You might hear longer versions ("please mind the gap between the train and the platform when boarding") in railway stations elsewhere in the country, but that particular "Mind The Gap" on its own is very much a tube thing.
I had about 2:40 left for the last question, ended up giving up, no idea. Only one I missed. All the others were easy imo ( though I get people might miss won and ant)
It's derived from Proverbs, but it's an old saying that essentially means that if you don't discipline a misbehaving child, they will continue to act that way for life.
(Also, from Wikipedia: "The phrase was first introduced in 1968 on the London Underground in the United Kingdom. It is today popularly associated with the UK among tourists because of the particularly British word choice (this meaning of the verb mind has largely fallen into disuse in the US).")
"eau de puppy" "eau de chiot"