Cat that ate the canary
Used to describe the look on someone’s face when they are satasfied with something they’ve done, said, or experienced...
Person One: *Finishes Puzle*
Person Two: Well don’t you look like the cat that ate the canary...
Person Two: Well don’t you look like the cat that ate the canary...
Cat who ate the canary
Self satisfied, pleased with one’s self.
My son looked like a cat who ate the canary when we found him with a plate of cookies.