細漢偷挽匏，大漢偷牽牛 [细汉－－－－－汉－牵－]

Jyutping sai3 hon3 tau1 waan5 paau4 ， daai6 hon3 tau1 hin1 ngau4
Pinyin xì hàn tōu wǎn páo ， dà hàn tōu qiān niú

Definitions (Wiktionary)
  1. proverb, Min-Nan
    one's behavior as a child will be paralleled in adulthood