I had the unfortunate experience of eating a pepper in an oriental dish that actually burned the skin on my tongue. That's no fun.
Euphoria? I think think of other ways...death by chocolate maybe.
I know the ones - about an inch to an inch and a half long, and thin papery red skin.
When I was 20, I once chopped habaneros and then answered nature's call. About :30 seconds later I was a half a block away, because I had a tremendous urge to try to outrun the pain.