Have you ever…
called a student’s question stupid?
read a student’s paper out loud to a class to illustrate a mistake (anonymously or not), and maybe gone too far in making fun of it?
cracked a joke about a student’s appearance?
revealed some aspect of a student’s personal life for the sake of humor?
torn a student’s paper or thrown it into the trash in front of them or other students?
thrown chalk or a marker or anything else across the room to get students’ attention?
assigned a punishment that would publicly embarrass a student, like wearing something silly or doing something embarrassing in a public place?