OK, this one's not as bad as the previous ones above, it's hard to top those, but still a good one.
Our forward camp was in a place called Kharyaga, above the Circle, in N.W. Russia (Eastern Europe, as sharply pointed out by the locals, NOT Siberia). The place had been a concentration camp for intellectuals and politicos, beginning with Stalin and continuing for most of the subsequent leaders. Still a bunch of guys living there with the numbers tatooed on thier arms, working in the oilfields now. Our building was at the end of "town", i.e., at the downriver end. We had one apartment where 4 of us could bunk and a smaller apartment across the hall with two bunks. Each apartment had an indoor bathroom, quite a luxury.
We never used any of the water out of the tap as our river water intake was at the wrong end of town, everybody else upstream just dumped all their "wastewater" into the river before us. As it was really cold out, the smell wasn't all too bad and we didn't use it much anyway. Normally did "birdbaths" from the bottled water we had.
One day, the pipe to the tank of the toilet in the other apartment froze up and burst (same pipe that fed the sink). Happily it burst down stream of the shutoff valve so the clever engineers that lived there were able to shut it off. Being the clever engineers they were, they decided that they could use the water out of the still functioning hot water pipe to jumper over to the toilet tank as they rarely used the sink and so didn't need the hot water.
They got the hot water pipe hooked up and, with the first flush, knew they had made a BIG MISTAKE. Now, the shitty river water, instead of being around 33F, was upwards of 140F and STUNK TO HIGH HEAVEN when you flushed the commode. Now the "thunderbox" as we called it, smelled worse before you went in to take a dump than after! Stunk up the whole apartment. And the poor guys were stuck as they couldn't reconnect the cold water line (misc. plumbing parts were in short supply) so they had to live with the stink in their little apartment. Oddly enough, dumping in a snowdrift outside was frowned on by the locals as we were considered to be "in town" and it was considered uncivilized. Go figure.
A little off topic here but one of the more interesting toilets I've ever seen and used was the one in my apartment in Usinsk. It had the usual tank up high above, pretty typical, but the bowl was long and flat with the water entering at the back, crossing the flat deck, and going down the hole at the front. It was about 16" from back to front. When you pissed, you really had to point straight down into the drain hole so as not to splatter against the flat area.
One of my friends there explained it to me (he could have been full of BS but it all does make some sense). Again, during Stalin, things were pretty rough, including healthcare and food (or lack thereof). They started making the toilets like this so you could do a "spot check" of your dump before flushing it down to see how things were going. Basicly checking for blood, bugs, worms, etc.
One of the results of this configuration, at least for us, was we had to make a little "boat" out of toilet paper and place it on the flat spot before continuing with the task at hand. Otherwise, you innvariably got these giant skidmarks as the turd was washed down the drain. And as the water didn't sit in the bowl like our toilets, the skidmarks never soaked away and so became hard and dried out between flushes, difficult to scrub away. And I hate to think of how a chick would piss in this thing, the phrase "Cow pissing on a flat rock" jumps to mind. Yeech!