Ok, so I admit, I am a sucker for FB clickbait lists. You know, the "15 times karma was instant", etc. Often they have a gif that expresses the response.
There was one titled "Baffled Students Share The Most Inappropriate Thing A Teacher Has Ever Said To Them"
Check out the gif with #3.
https://www.tickld.com/x/fbk/baffled...ever-said-to-t