A childhood belief about weeing and pooing

As a grownup, I've seen Fleet Babylax, which seems vaguely similar to what my mother must have used on me in one of my earliest childhood memories. I know she was squeezing something into my rectum and it felt really freaky. I asked her what it was for and she said in a reluctant and put-out tone, "It's to make you doodoo." I was incredulous because I'd been well indoctrinated at the time into a view that doodoo was nasty and a naughty subject that one didn't mention if possible. I'd never yet imagined that doodooing was'nt something one could be fine without dooing for however long one didn't get the urge to, and be all the more sweet, pure and well-behaved for avoiding for that matter. I'd yet to get any inkling that expelling feces might be a necessary and healthful thing. So in my incredulity I asked my mother again what it was for. She just waxed more cranky and pissed as she repeated,
"IT'S TO MAKE YOU DOODOO!" Gee, for whatever I might have thought of my mother most of the time back then, that day I thought she was really being some kind of cruel monster for trying, just for the fun of it, to make me be naughty and doodoo when I wasn't feeling the least inclination to do so.