McCoy: Do you know what you get if you feed a tribble too much?
Kirk: A fat tribble.
McCoy: No. You get a bunch of hungry little tribbles.
Kirk: Well, Bones, all I can suggest is you open a maternity ward.
Redux -
McCoy: Do you know what you get if you feed a starship captain too much?
Kirk: A bunch of hungry little starship captains.
McCoy: No. You get a fat starship captain.