fish-eating grin

fish-eating grin

A smug, self-satisfied, or overly pleased smile, especially one that (intentionally or unintentionally) irritates others. She's been walking around with that fish-eating grin on her face ever since she found out she got into Harvard.
See also: grin
Farlex Dictionary of Idioms.
See also:
  • pie-eating grin
  • coprophagous grin
  • smile like a Cheshire cat
  • smiling like a Cheshire cat
  • look like the cat that ate the canary
  • look like the cat that swallowed the canary
  • the cat that ate the canary
  • the cat that swallowed the canary
  • all-over oneself
  • like the cat that's got the cream