If you are squeamish, I'll implore you to stop reading now.
Anyways, we went to go dump the black water tank on the RV the other day. If you don't know what the black water tank is, well... it's the crap tank. It was full beyond full. As soon as I went to pull the lever on the valve, it broke off right in my hand. You probably don't know what this means. Let's just say that all 20+ gallons of human waste was left trapped behind a broken gate that would not open. In order to fix this, you have to replace the valve.
Well, this sounds simple until you realize that when you take off the valve box, there will be a Niagara Falls of rancid crap that will fly out of the thing.
Want to know what's even better? You have to be laying under this thing to get the valve off.
So, knowing all of this could not prepare us for the reality of what 20 gallons of rancid urine and feces would do once it found a hole to break out of. Do you know what it's like to be sprayed by that? It was literally a gusher of poo spraying all over the dump station. My dear sweet wife had enough balls to try and stick the sewer hose in it to control the flow, which only stopped maybe half and left her arms covered and spray on her shirt and face.
So, after many many many long minutes of washing, scrubbing, hosing, and rubbing myself down with enough hand sanitizer to kill an elephant, I'm proud to say we now have a working valve again.