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When you mess up so bad you look like a total idiot in front of a bunch of people, and all they can do is stare at you like you just said something stupid.
I tried to fix my phone but now it's broken and I'm crying in the hallway.
I walked into the wrong class and nobody said anything, just stared at me like I was a ghost.
I tried to answer a question but I said the opposite of what it was, and the teacher facepalmed.