Interesting stuff. In the 7th grade, I was already hooked on enemas. I had gone to the bowling alley with my Dad, and while the adults were bowling, I went into the bathroom. I had brought a balloon, my Bic 4 color pen, and my "enemingenuity," so I filled the balloon with water (you guys all know about water balloons, right?), added a couple of squirts of the Castile soap that used to be everywhere in public bathrooms, and secreted myself in the toilet. Out came the business end of my Bic pen, & I slid it into the top of the balloon, and proceeded to give myself oh, maybe 12 oz of soapy water. Didn't work too well, since the balloon didn't want to stay too attached to the nozzle, but, hey! I was 12, and enjoyed things in my ass. Afterwards, I hid everything in my jeans pockets, reassembled the bic pen, and went on my way as if nothing had happened.
I've always thought of that as weird, but reading some YOUR responses, I'm convinced that we are pretty much alike. At least I shut the stall door in the bathroom. I was also very quiet about it, and the objects I used were pretty "normal," just never used like that...