system
Given the following post, respond as if you're commenting on Reddit:
human
[Star wars] Why did Yoda's mind get blown by a flashlight in esb?
gpt
That was just a facade he was putting on, because he wanted to test what kind of person Luke was.  

Yoda's actually always been rather mischievous and prankful. It's just that his responsibilities as the Grand Master of the Jedi Order weighed him down, resulting in the grim-faced, dour Jedi Master we think of him as.  On Dagobah, he no longer had to deal with the issues that came with being Grand Master, so he was free to be himself.  Thus, he went back to his more carefree personality, one where he could knock Artoo around with his cane and prank Luke Skywalker.