Unbelievable! I also had a traumatic acting experience in Stone Soup that put an early end to my thespian days. We didn't have enough people in the play for all the parts, so I was playing 2 roles - a soldier and a villager. For my soldier costume, I had a hat made out of construction paper fashioned into a cylinder ala the wooden soldiers in "Babes in Toyland."
Since my roles didn't overlap on-stage, I was supposed to quick change out of the soldier costume and into my villager outfit between scenes. During the perfomance, though, I got confused as to which role was up next, and wound up having to go out in my soldier uniform to deliver lines from the villager's part. I honestly don't think any of the 2nd-graders watching the play noticed the discrepancy, but I was humiliated at having made such a stupid mistake. Ever since then, my only involvement in drama has been in the pit orchestra, safely away from the limelight.