what's it to you

what's done is done, what's eating you, what's good for the country is good for general motors, and vice versa, what's good for the goose is good for the gander, what's in a name? that which we call a rose / by any other name would smell as sweet, what's it to you, what's new, what's the good of, what's the idea, what's the matter, what's up