Did you re member it, or did you just type in Kirk Tantrum on Google?
Incredible Google! As good as "LIBRARY COMPUTER" on the Enterprise!
I never saw that one, so I never saw Kirk's tantrum.
And do you know why I never saw it?
Because the "green lady" (played by starlet Yvonne Craig) creeped me out so much (at the age of 11) I turned it off! I remembered it when I went to this page.
The reason I thought it was from a blooper reel was because they allowed a clear view of the "transporter room" control panel, which (I thought) they never allowed to happen, just as they never allowed a clear view of the controls of a Tricorder to be visible.
:-) Little of both. I vaguely remembered the scene, but not the name of the episode, so I typed in Kirk Tantrum on Bing.
The transporter room panel shown was on the planet. Garth had morphed into Kirk, and was angry that Kirk and Spock had put in a security measure to prevent anyone from getting away with pretending to be him. (Spock gave a chess move, and Kirk’s answer was to be the responding chess move.)