What is the most ‘ground swallow me up’ embarrassing moment that’s ever happened to you?

I had a public speaking class in high school, and for our first presentation I was assigned to do a speech about gun control or something. When I got up in front of the lecture hall I began to notice that I could feel ice cold sweat on my brow, and my legs were a little bit rubbery. As I gave the speech I began stuttering worse and worse, and my legs started buckling beneath me until I fell over onto the desk next to the podium and flipped it onto myself. The desk had a cup of hot coffee on it that tripped nicely over and completely doused me.

I also once told a girl that I was willing to "be her dildo" in a moment of panic while trying to ask her out.

/r/AskReddit Thread