I was once on a flight from Auckland, New Zealand to a small town way down on the extreme souther tip of the South Island called Invercargill.
The plane I was flying in was very old propellar driven thing, I think it was a C47 Goonie Bird.
The toilet was certainly not designed for a guy my size because the bowl was against the far wall, but the ceiling curved backwards. I found myself leaning way back like I was doing the limbo and trying to urinate at the same time.
Being a propellar driven plane, we hit a bit of turbulance. Because I was leaning backwards so much, put my left hand behind me to brace myself against the door and continued to urinate.
My left hand accidentally hit the door latch and I fell backwards into the aisle and every passenger turned around to see me laying in the aisle with my penis in my hand and I could not stop urinating for the life of me.
I got back into the toilet and composed myself. After another 10 minutes, i returned to my seat and everyone started to applaud.
One old man thanked me for the funiest sight he had seen in all of his life.