Hey guys Alex is here to explain! The joke here is that teachers are generally not the best with technology at all, so when you’re forced to watch a YouTube video in class, they for some reason, PRACTICALLY NEVER put the video on full screen because they don’t seem to realize that they can, so it’s super frustrating when they just sit there and don’t make it full screen. This is why the difference between the two images is the fact that the bottom one does not have a “full screen” button because teachers don’t hardly ever make the image full screen.
And hey if you’ve read this far, you might as well follow! I explain memes like this all the time :) @alexplains_