Nothing too bad, this is all I have remotely close to an embarrassing moment:
I was in History class. Now, you may know I like to draw comics, right? Well, that day we had a substitute. He was a mean-ass old guy, so while we were supposed to be doing notes, I drew up a comic about him. Basically it included him being a national socialist and the devil and all this weird stuff. Well, al of a sudden, I see him walking down my row. I'm like, stuff, he's gonna see me. As he stops to my side, I hunch over my paper and do my best to look like I'm writing. I think I even wrote "It was too late. He grabs onto the notebook and snatches it up. He simply says "I'll be talking to Mr. Fralick (the actual teacher) about this". I sat there, grumbled something along the lines of "I'm sorry", and stared off into space. For about 15 minutes, I sat still, just looking off into space. Everyone had been looking at me the whole time. I had a cold chill in my body. Before I knew it, it was time to go.
Next day, Mr. Fralick simply said "It's immature, so don't do it again, k?" and I was all "k" and we were both k.
Scared the stuff out of me though.