"We live in a democratic states where there is freedom of speech"

well, that may be true (for you) - and no one is going to drag you off to prison for giving your opinion - but freedom of speech doesn't mean you HAVE to give your opinion - as you will learn (hopefully) when you grow up.

and it doesn't mean freedom from consequences - such as me saying you are an immature moron who doesn't understand that other people may have a different idea of what is humorous and what is not

"Explaining a joke is like dissecting a frog. You understand it better, but the frog dies in the process"

"A little bird told me" Is a common expression in the UK (and, I think, in Canada and the USA). It means that someone has told you something - usually something confidential/that you were not supposed to know - and you chose to keep their identity a secret.

Of course, if you really thought that a real 'little bird' was talking to you, and giving you confidential information, then it could be a sign that you were hallucinating

It is a pun - a play on words or phrases that have may have two, or more, different meaning.

as it is a pun, then - by definition - it is a joke.

If you dont like it, or - more likely - if you dont understand it, then you are free to pass it by without making a comment.

I admit, I have done so with many jokes on this sub. But - something you may learn when you grow up - not everything in life, is made for your personal enjoyment

I think maybe you didn't like the joke..... because I dont think that the 'Vatican City' is the biggest country in the world

OK, not all humour is for everyone.... but I will reply, anyway, to give you the attention you desperately crave