Fish-Out-of-Water Comedy
Dropping a character into a world whose social rules they don't understand. The comedy, and some insight too, comes from the constant mismatch between them and everyone around them.
Bananas
Mellish is a neurotic, blue-collar New Yorker dropped into a revolution he does not understand. He learns to fight clumsily, and the comedy comes from how little he fits in. His reason for being there is to impress a girlfriend, which makes the mismatch funnier.
The Big Lebowski
The Dude is completely unequipped for the world of wealth, crime and nihilism that he wanders into. The comedy comes from his refusal to get equipped. In every setting, he responds by being exactly himself. He is a fish that declines to admit it is out of water.

