There was all that stuff in Day of the Dove, but that was being manipulated by the alien.
There's a story that when Scott says "Keep your Vulcan hands off me!", the director suggested to James Doohan that he pronounce "Vulcan" as if he were saying a certain expletive. Doohan grinned appreciatively.
I've heard this but instead of the director, I've heard that it was the episode's writer Jerome Bixby who told Doohan to say "Vuckin'."