Some idioms involving eggs are fairly well known, including with egg on one’s face (‘appearing foolish or ridiculous’), kill the goose that lays the golden egg (‘destroy a reliable and valuable source of income’), and walk on eggshells (‘be extremely cautious about one’s words or actions’).
Every year on 10 October, Finns celebrate the day of Finnish literature, named after one of the earliest writers of prose in the language, Aleksis Kivi.
Even if you are something of a polyglot, there will probably be hundreds of languages you can't read yet.
When you travel but don’t speak the local language at all, some situations can be quite frightening, and funny.