I did something like that over 20 years earlier; stood up there and just looked at the class (college public speaking class) and then said, "I want to sit down" even when the teacher asked me to just take a deep breath and start again; I just kept babbling, "I want to sit down" until she let me.

However, I was not then or now a loser. I learned to give a speech without messing my pants or dying and got a "B" in the course. Lots of things are scary; we just have to keep trying until they become more familiar and easier to accomplish. I was scared of giving "public" speeches, some people are afraid of small, furry, animals (I had a rabbit I brought to work, it was in a box across the room but my coworker kept turning around suddenly, terrified it was "sneaking up" on her) and others are afraid of things they refuse to tell people about for fear they'll get laughed at.

You aren't a loser; those who laughed are the losers; they lost the opportunity to help someone else and get the good karma of being helped sometime in return when they were scared