Yup, BTDT with the hand towel business. All it does is soak up a bunch of water so that you not only have a wet carpet, but now you have a soaked towel, dripping water everywhere!
I've done the same thing, but not quite as bad. I get ready to turn the water off just as it reaches the top, and then I screw up on which way to turn the knob. Water starts spilling out by the time I figure out which direction to turn that thing!
One of my favorites is when I do a water change on one of my smaller tanks. I fill it up to the top, sometimes more than I intended (see above). But it's not spilling out... YET.
So I go on about my business when, suddenly, out of the corner of my eye, I see a leaf floating around in the water, close to the bottom of the tank. Well! That just can't be in a freshly cleaned tank! So I immediately plunge my hand, wrist and forearm into the water to get the dastardly floating leaf... when...
Drip! Drip! Drip!
Yup, my hand pushed the already too high water over the edge. Now water is flowing out everywhere!
You'd think I'd learn after the first time that's happened. Umm... no.