happy as a clam

A bouquet of red roses “will be dead within a week, while this,” — he gently shook a pot of plump Winter Rose blooms — “will still be there, happy as a clam. But people looked at the plant and said, ‘Oh, that’s a poinsettia,’ and walked on.

Recent developments, Mr. Blinder said, are consistent with his view that a soft landing is possible — “I’m happy as a clam,” he said — but he said such an outcome is far from certain.

“Once I get Mittens back, I’ll be as happy as a clam, and my life can get back to normal. I just need my baby back.”

“I would love to have that kind of career. If I could have Martin Balsam’s career, I’d be happy as a clam.”

The phrase happy as a clam is generally believed to have begun as happy as a clam at high tide.