"Mr Barrows, I have guards around the grain, I have guards around the Klingons, the only reason those guards are there is because Starfleet wants them there. As for what you want... " glances at Spock "it has been noted and logged."
Capt. Kirk in response to Mr Barrows - Trouble with Tribbles
- or -
any of Dr. McCoy's "I'm a doctor not a ..." lines.