<bq author="Giordano Bruno" date="1582" href="https://en.wiktionary.org/wiki/se_non_è_vero,_è_ben_trovato" source="Wiktionary">Se non è vero, è ben trovato.</bq> I heard Slavj Žižek use this phrase in a recent interview. It translates in English to "Even if it is not true, it is very well-invented," or, perhaps a bit more colloquially, "Even if it ain't true, it's a good story."