Fit as a fiddle ... apparently!

I've just been to see the vet. Not fun. :-( It was time for my annual flu injection, which is very important for us cats apparently, but just seems to me as an excuse for a rather nasty guy in a white coat to prod and poke me around and then stick a needle in me. OUCH! Even the humans find it painful - I heard comments of 'ouch, that hurt' when their plastic money card thing was passed back to them. I'm glad they found it painful as well, now they know how I feel! Anyway the vet person said that I was 'as fit as a flea'. I was a bit put out by that - a flea? Hmmm - just waiting for them to go off to bed so I can do some research on what that means. Sometime later ... Ah, I've found it in a book now. Apparently it just means to be really fit and well. I thought it meant I was like an insect or something. Strange expression though, just found 'fit as a fiddle' in the book as well, now why would anyone be as fit as a violin? How daft is that? Honestly humans are funny creatures, I've been doing some more reading, all these weird sayings about cats ... Someone jumping around and nervous is like 'a cat on a hot tin roof'. You try standing still on a hot tin roof! Then there is 'the cat that got the cream', not very often in this household let me tell you. They seem to think it's too good for me. And what about 'curiosity killed the cat', I don't like the sound of that one. Nothing wrong with a bit of curiosity, cardboard boxes NEED investigating and the fact that my inquisitive nature has sometimes led to me getting trapped somewhere is no reason no to go where I should'nt. I'm a cat - that's what cats do!