I’m a doctor, not an escalator. McCoy’s disdain for the transporter is first seen here, as he complains that he signed on to practice medicine, not to have his atoms shot across space by “this gadget.”
He also has one of his absolute finest moments when Khan wakes up and grabs his throat while putting a scalpel to his neck. McCoy very calmly tells him to either choke him or cut his throat, and to hurry up and make up his mind. When Khan asks where he is, McCoy’s bland response is, “In bed, holding a knife to your doctor’s throat,” adding blithely that it would be more efficient to slice open the carotid artery just under the ear. Khan is impressed by his bravery, but McCoy says he was just trying to avoid an argument. And that, boys and girls, is why Leonard McCoy is the best ever.