What was your most embarrassing moment ever?

What was your most embarrassing moment ever? I'm pretty sure everyone on here has some form of embarrassing moment, but, for us, we have "a few more" than the average human. Mine was giving a presentation on a science topic during my last year of undergraduate, and it wasn't anything complicated, but I stuttered every single word in that 30+ slide deck. I felt so much embarrassment even from my classmates that couldn't even look at my work. Although I received an A on the project, I felt they only gave me that grade for the guilt I must've felt afterward.