I find health faucets <a href="http://en.wikipedia.org/wiki/Bidet_shower" rel="nofollow">http://en.wikipedia.org/wiki/Bidet_shower</a> quite effective, except that one time it went terribly wrong.<p>These are essentially telephone showers installed next to the toilet. You switch them on using a valve/trigger and then manually direct the fire. Simple, cheap and no fuss.<p>This little guy, however, turned out to be a closet fire hose. It pretty much went from 0 to 1000 gallons per sec in an instant and just wouldn't let up, the valve was stuck. The extension cord was twisting and coiling around like crazy with the released pressure, the shower head was going at full blast in my hand, initially directed at my rear, it was continuously pushing my hand away from anything that I was trying to point it to, it give me a visceral understanding of how jet engines work.<p>Working out a sequence of operations in my head to get out of such a situation while caught in a compromised and inflexible position, with only one hand free, was quite a challenge. I am not quite sure if I should be thankful that it wasnt autonomously powered and directed.<p>My first Japanese toilet experience happened @ Google (I was interning there at that time). When the water touched the derriere, it made me flinch and jump with surprise, as I wasnt quite sure what to expect, this was several years ago and Japanese toilets were still an unfamiliar opbject to me. And it really tickles the shit out of you ! (no pun intended) I guess there are ways to choose between a laminar and degrees of non laminar flow (all those controls must be for something), I would expect the former to be somewhat less flinch inducing.