estar más fresco que una lechuga

Meanings:

• 1.

  SpainLatin Americacolloquialinformal
  • To feel or look very fresh, lively, or well rested.
  • To be relaxed and unaffected by stress or difficulty.

• 2.

  SpainLatin Americacolloquialinformalpejorative
  • To act with shamelessness or bold impudence; to behave as if one had done nothing wrong.