Briefly, "the realization that each random passerby is living a life as vivid and complex as your own." Originally from the Dictionary of Obscure Sorrows, which has a lot more beautiful neologism definitions like this you might enjoy.

Is used in Italian to mean literally 'fuck'. Is is a vulgar term that refers to putting a key in a lock, and is thus associated with having sex.

Similar to 'chivare' is 'scopare' which means to have sex and also to sweep the floor. Both are vulgar itlan terms for having sex.