蝨多不癢 [虱－－痒]

Jyutping sat1 do1 bat1 joeng5
Pinyin shī duō bù yǎng

Definitions (CC-CEDICT)
  1. many fleas, but unconcerned (idiom); no point in worrying about one debt when one has so many others
  2. Troubles never come singly.
  3. It never rains but it pours.