中頭獎 [－头奖]

Jyutping zung1 tau4 zoeng2
Pinyin zhōng tóu jiǎng

Definitions (Wiktionary)

verb, Cantonese, humorous, idiomatic, verb-object
to be hit on the head by falling objects or bird poop
verb, literally, verb-object
to win the first prize; to win the jackpot

Jyutping zung3 tau4 zoeng2
Pinyin zhōng tóu jiǎng

Definitions (粵典–words.hk)

動詞
贏咗一等獎；攞到最好嗰份獎金或者獎品
to win the first prize (in a lucky draw, lottery, etc.)
動詞
（幽默）個頭中咗雀屎
(humorous) to be hit by bird poop on the head; a wordplay on 頭tau4, which can mean 'the first' as in Sense 1, but can also mean a person's head

Jyutping zung3 tau4 zoeng2
Pinyin zhōng tóu2jiang

Definitions (CC-CANTO)

to win the top prize; to get hit on the head by something; to have bird poop landing on one's head [written and colloquial]

Examples (粵典–words.hk)