No, but I know somebody who has 
Have you ever ate or drank something even though you know its gonna mess your stomach up or give you heartburn?
No. I don't think that's possible for me. I've gone to Hooters, ordered their "3-Mile Island Buffalo Wings" and put tabasco on them. I almost always order "Hot" when I order Thai food. The funny thing is, except for the places that know me, they also ask "are you sure? Have you ever had our hot before?"
I can only think of two occasions where I ate something too hot for me, and even then I didn't get heartburn.
Have ever been knocked unconscious?