be (as) happy as a clam (at high tide)

be (as) happy as a clam (at high tide)

To be very joyful and content. Clams are dug at low tide, so a clam at high tide would be able to remain uncaught. Look at your sister out there! She's happy as a clam at high tide now that she's back in the starting lineup again. I know I'll be happy as a clam once I get this stupid cast off my leg.
See also: clam, happy, high
Farlex Dictionary of Idioms.
See also:
  • (as) happy as a clam at high tide
  • stem the tide
  • stem the tide, to
  • sauce
  • (as) happy as a clam in butter sauce
  • tide
  • (as) happy as a clam
  • clam
  • happy as a clam
  • Larry