What's your toxic teacher trait?
Mine is that when I fold a piece of paper in half so that it looks like a birthday card, I say "I folded mine like a birthday card." I have literally never in my life seen a hamburger that is rectangular and hinged on one end. My students still scream at me "you folded that like a hamburger!" so I finally started telling them that I don't care how they fold theirs or what they call it. These are teenagers, by the way.