Mine was following a friend through the park to go to the jumps, he hit a fairly long box, it looked pretty easy so I gave it a go, unsurprisingly I ate shit. He was baffled that I would just try it without any idea how to do it.
Then when I tried to learn, I tried to go right foot forwards, because I span left, never thinking that maybe left might be better, got a nasty hematoma before I realised that left foot forwards was easier.