嘴饞屄浪，早晚上當 [－馋－－－－－－当]

Jyutping zeoi2 caam4 bei1 long6 ， zou2 maan5 soeng5 dong3
Pinyin zuǐ chán bī làng ， zǎo wǎn shàng dàng

Definitions (Wiktionary)
  1. proverb, vulgar
    one who cannot control their desire gets taken in sooner or later.