大daai6蛇se4屙o1尿niu6

English

1. it's a vulgar expression, meaning a big deal
2. a big deal, an important deal (usually used with 未見過 "have never seen"); literally: big snake pisses

粵語 — Cantonese

1. 形容件事好大、好厲害、難得一見（通常同「未見過」一齊用）

Examples

• 少少事就大驚小怪。未見過大蛇痾尿！

  Why the fuss about that little thing? That's nothing close to a real big deal.