You can tuna piano but you can't tuna fish.
The optimist sees the light at the end of the tunnel. The pessimist sees nothing. And the realist sees the train.
One's a prime number, the other's a prime minister.
The Tuna, since all of the others are crushedasians.
An out-of-tuna!
A-flat minor (or a broken piano)
You can tune a piano, but you can't piano a tuna!