A childhood belief about weeing and pooing

When I was in the third grade, I was in a new school, as my family had moved to a new city. The first (and it turned out only) time I ever ventured to take a poo at school that year, I went to the girls' room and a frightening thing happened to me for the first time (and so far luckily the worst time so far). Just as my turd was well on its way out, a sudden sharp and painful cramp of some kind overtook my anal region (and a good portion of my butt cheeks, so it seemed). And my butt continued to feel an unprecedented strain for a while after I finished taking that crap. That bathroom had black toilet seats, which I had no memory or ever using before. So I figured that that sorely painful experience was somehow caused by the black toilet seat. To this very day when I find myself in a bathroom with black toilet seats and a "number two" that i can't possibly hold back until I get elsewhere, I won't use the seat - I raise it and sit on the rim. I know it sounds crazy, and everyone I've told about it says surely a thin hard toiet rim would be more likely to cramp my butt than any toilet seat. That sounds reasonable, but nonetheless, I still don't change my practice of raising any black toilet seat and sitting on the rim if it's a "number two" that I hafe to take there. By the way, recently I've started hiking some. Some of my companions in hiking seem amazed that a dainty properly raised lass like myself is among those most at home "going" in the woods when necessary. I haven't told any of them yet that that comes from practice at pooing in the woods when that was sometimes the comparatively inviting alternative to using a black toilet seat!