Leonard McCoy and Spock obviously had a rivalry of sorts going on. It was fierce, and it was fiery, and some of the younger crewmen thought that maybe one might snap and kill the other.
It never did come to that, but it was close a few times.
"You green-blooded, demon she-dog!" McCoy snarled at the Vulcan, "This is your fault!"
"I fail to see the logic in such a declaration, Doctor." Spock didn't stop his hike up the mountain as McCoy blasted and eviscerated him. He did shift Kirk a little further up on his shoulders. The unconscious man seemingly grew heavier by every minute that passed.
"You fail to see the logic?" McCoy stomped up the mountain trail left in Spock's wake, "If you hadn't just let the woman kiss you for a minute, she never woulda taken offense! She wouldn'ta ran cryin' to her pa! Her pa wouldn'ta sent three dozen soldiers after our fool hides!" McCoy slipped down a bit on his climb, stilled, and then continued up after regaining his balance, "Now we're outlaws, Spock!"
"It was not illogical to turn down her advances. Her over-reaction could not be predicted nor avoided." Spock didn't sigh, but any human in his position would have had sex with the girl so... Spock was still on the high-ground here.
"Outlaws!" McCoy hissed, "Y'all gonna be the death o' me!"