When to use idioms or slangs to say died?

Answer 1

You would use an idiom or slang when it seems too blunt to just say "they died." You might say "they passed away" in a situation where you want to be a little more sensitive.

You can also use slang to make it humorous if it's not a real person who died, such as "the villain in that movie croaked" or "the third little pig offed the wolf."