虱子多了不癢，債多了不愁 [－－－－－痒－债－－－－]

Jyutping
Pinyin shī zi duō le bù yǎng , zhài duō le bù chóu

Definitions (CC-CEDICT)
  1. lit. covered with lice, one doesn't feel the itching anymore; up to one's ears in debt, one ceases to worry about it (idiom)
  2. fig. to be past worrying (about sth)