Thankfully, I have no firsthand knowledge of how pedos groom their victims. However, I personally wouldn't have trouble with an adult explaining a plumbing fixture. In an age-appropritate way, of course, either "you can use it to clean your behind after you go" or "it's called a bidet; your parents can tell you what it does." If a troublesome pattern shows up, or if the child starts acting oddly, then by all means find out what's going on, but the vast majority of adults would never dream of harming a child.
My mother was about the biggest prude in the universe but I grew up in the day where commercials for Summer's Eve and Massengill Disposable Douches were on like every single commercial break. One night I finally asked her what these vaguely-described but apparently necessary things were. "Some women use them to clean their butts," said the woman who told me she didn't know what maxi pads are for. Fine. Asked and answered.
As for the maxi pads, I would stick them to the soles of my feet because they were just about the right size and squishy to walk on. She left it to my sisters to straighten me out on that one