When Scotty is justifying his bar fight to Kirk:-
Scott : Well, Captain, er... the Klingons called you a... a tin-plated overbearing, swaggering dictator with delusions of godhood.
Capt. Kirk : Is that all?
Scott : No, sir. They also compared you with a Denebian slime devil.
Capt. Kirk : I see.
Scott : And then they said that you were a......
Capt. Kirk : I get the picture, Scotty.
Scott : Yes, sir.
Capt. Kirk : And after they said all this, that's when you hit the Klingons?
Scott : No, sir.
Capt. Kirk : ...No?
Scott : No, er, I didn't. You told us to avoid trouble.
Capt. Kirk : Oh, yes.
Scott : And I didn't see that it was worth fighting about. After all, we're big enough to take a few insults. Aren't we?
Capt. Kirk : What was it they said that started the fight?
Scott : They called the Enterprise a garbage scow! Sir.
Capt. Kirk : I see. And... that's when you hit the Klingon?
Scott : Yes, sir!
Capt. Kirk : You hit the Klingons because they insulted the Enterprise, not because they...
Scott : Well, sir,
this was a matter of pride.