I'm gonna copy and paste my story I posted in another comment thread because it's relevant.

I had this one moment in 8th grade. We were all silent doing our work, one of the few times this ever happened as it was a pretty loud class usually. At some point, my teacher gets up and stands near my desk and starts talking quietly, but he's looking at the kid behind me when I look up at him, so I assume he's talking to him about some work he missed or something. He goes on for about a minute explaining something, then he suddenly pauses and says "...(My first name)?" I was caught by surprise, and my reaction was to look up at him with this really dumb blank stare and say "Wut?" loud enough for the whole class to hear and laugh their ass off.

Thankfully he was really cool and had a good chuckle at it.