That's cool.
I peed over Niagara Falls once, standing as close to the edge as I dared. It was 4:30am and the public bathrooms were locked. I have always wanted to tell someone about that but it never came up in normal conversation before now.
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On a submarine, we have a sanitary tank that collects the pee and poop. When a submarine is under water, the liquid waste needs to be a higher pressure than the water at the depth we are at in order to dump it overboard. For this purpose, we have a positive-displacement pump and the ability to pressurize the tank with air to "blow" the sanitaries overboard.
One time, we were 300-400 feet (100 meters) below the surface and a shipmate received permission to blow the sanitaries overboard. He walked through the boat and hung signs in the heads to warn people not to operate the ball valve that flushes the toilets since the tank was pressurized. If someone did flush the toilet, it would spray back at them due to the pressure in the tank.
Hanging the signs often takes an hour or so due to having to wait for people in the head to quit and get out. After hanging the signs, he started pressurizing the tank. During this time, the boat went up to periscope depth, checked for surface traffic, and then proceeded to periscope depth. From periscope depth, the boat then surfaced. Surfacing the boat required other duties so he left the tank pressurization to attend to them.
The Officer Of the Deck (OOD) went up into the bridge in the sail and took a lookout and a third person with him.
http://www.perch-base.org/glossary.htm#B
Once safely surfaced, my shipmate was able to return to the activity of blowing the sanitary waste overboard, except the pressure gauge was stuck showing a low pressure, and we were now surfaced, requiring very little pressure above atmospheric pressure to blow the waste overboard.
He opened the outboard valve with the intention of allowing the waste to blow gently overboard but with the tank being overpressurized it blew out at high velocity into the air thirty feet high, soaking everyone in the bridge in waste, including the OOD.
Apparently, the OOD had authorized the blowing sanitaries overboard and the Captain ordered the OOD to surface the ship before the blow could be completed. The OOD forgot about blowing the sanitaries and my shipmate forgot the pressure he originally pressurized the tank to.