Yoda Lightning – when a character in a movie does something that makes you yell at the screen, “If you can do that, why don’t you do it all the time? Why don’t you do it in this instance, and that instance and the many other ways that thing you can do could affect the plot, but you don’t! Why don’t you do it?!?”
The answer is usually, “Because it would make the movie 5 minutes long.”
This term traces its roots back to Star Wars The Last Jedi . In this film, (Force ghost) Yoda summons a lightning bolt to burn down a tree. This begs the question: if he can just appear somewhere and summon lightning, why doesn’t he do that all the time? It sure would save the Galaxy from a lot of horror and bloodshed.