Similar to 'pissing up the wall' - contestants would start off their stream at the trough mouth and gradually keep shuffling backwards, trying to keep the piss going troughward. Great distances could be reached and the contestants would try to get back to the trough before running out of pressure. Clearly the floor was the first casualty in this sport.

Some kid in the year below pissed right up himself, all over his jumper and in his own face, trying to beat me! He pissed in his own face!
I was the best in our first school at this, cos I'm well tall. I heard once that I'd managed to get a little bit of piss on the ceiling one time, but I think someone got a little over excited (as you would) and made that bit up.

It's very possible to hit the ceiling. I saw someone do it once and thought it so incredible that I tried to emulate the technique myself. However, from where I was standing, it looked like he had held his foreskin shut, before letting a thin jet of extra high pressure piss shoot to the ceiling. I tried this, and it ended up filling up rather too rapidly for control, then I released my fingers a little too much and the whole 'balloon' of piss emptied over my shoes.
The point I was missing? You grip the actual end of the cock itself, pinching the piss hole half shut so that it's really small. Then start the flow, and you'll have a fantastically long-reaching stream. Great for standing at one urinal and pissing sideways into one that's about two or three down.

We had outside toilets with no roof at my primary school. John Climie was to be able to piss over the wall (must've been 9 feet high), with a whip like flick of the hips. We'd come out and see kids looking skywards, holding their palms upwards, checking for rain.