I used to hate it when this happened in school! Teachers know their students weren't listening and just want to embarrass them!
I know, right?! Things like this would happen to me in school, too. Couldn't resist making the same happen to my characters as a result. (Sorry, characters!)
haha! that's cruel but funny! Did you ever come back with a snarky response? They got me a lot of detentions lol!
LOL, no, I usually just said "Um" or "I don't know." (So witty, right?!) Once, though, I forgot to read a story for class, and when I got called on to answer a question about it, I completely made something up that the teacher though was incredibly insightful. HAH.