I don't recall the age. Young, let's say. Much to young for the real thing .
I used to soap up the tub and whip around it , periodically smacking my head on the faucet (enter head injury jokes here).
During one of these terrific hits to the skull I laid back in the tub and the shower head, well it found me, really. It was a ridiculously strong stream. I think that shower drained Whalom Lake itself.
It grazed across my clit, which I already had found and spend a lot of time "tickling," but this was SO different than my own hand. I began a steady stream of pulsing orgasms and learned how to edge and hold it and hold it and hold it until I had mindshattering orgasms.
It was very difficult to get me out of the tub after this discovery.
It was to be replaced as my ATF years later in high school when I became intimate with the vacuum cleaner at my dad's place. I couldn't wait to clean the house on Saturdays while he and his wife went to town. "Bye guys!" I'd say way too cheerfully, "No rush coming home!"
I do not remember how I discovered the bliss of the suction against my panties, but once I did.... there was nothing that could tear me away from my weekend chores!