Used when reality proves to be more bizarre than imaginary scenarios or creative stories. He won the lottery twice in a month; truth is stranger than fiction!
Pro Tip 2/3
Informal Context
It's most often used in casual conversations rather than formal writing or speeches. I bumped into my long-lost cousin in Greece, truth is stranger than fiction.
Pro Tip 3/3
Emphasizing Surprise
It highlights the speaker's astonishment at the surprising nature of the event. They found a hidden room in their house; truth is stranger than fiction.