省省吧

shěngshengba
  1. (coll.) Don't waste your breath.
  2. Save it!

CEDICT

colloquial

Entry Composition

1 省 shěng
  1. to save; to economize; to be frugal
  2. to omit; to delete; to leave out
  3. province
  4. provincial capital
  5. a ministry (of the Japanese government)
2 省 shěng
  1. to save; to economize; to be frugal
  2. to omit; to delete; to leave out
  3. province
  4. provincial capital
  5. a ministry (of the Japanese government)
3 吧 ba
  1. (modal particle indicating suggestion or surmise)
  2. ...right?
  3. ...OK?
  4. ...I presume.