I was in high school and we had a prize giving ceremony during school assembly.

My name gets unexpectedly called out, so I make my way to the front of the hall to collect my prize. I'm almost at the front when I have a sudden crisis of confidence and think that I must have misheard them and there is no way they called my name, so I turn around, walk back to my chair and sit back down. My friends are looking at me and ask me what the hell I'm doing, and tell me to get back up there to collect my prize. So I get back up, walk all the way up to the front and then have ANOTHER crisis of confidence and think that my friends must have been messing with me. So I turn around and walk back to my chair and sit back down. The hall is silent and the teachers are on stage looking at me like I just landed from another planet.