Back when I was just starting out riding, I was going up the road of Mt Cootha with my brother. Got right below the summit and thought we'd stop for a quick breather.
While we're sitting there, I notice the car parked on the shoulder across the road has a guy just sitting in the drivers seat, staring out into space doing nothing. I thought, that's a little odd, what's he waiting for, the I see a bit of a head pop up and disspear from below the window sill, then a bit later again. About this point we think it's time to get a move on, just as we're leaving, a woman sits up in the passenger seat from 'resting her head' in his lap.
I couldn't help but think given it was a weekend, and that's a fairly well driven road that they could have picked somewhere better?
Another one I saw when I wasn't riding. We were walking down one of the fire trails from the summit at Mt Cootha (can't for the life of me remember why) when 2 riders came by about 30-40m apart. The guy at the back took a leap over a berm and stacked it pretty bad, grinding his head into the ground. We ran over when he didn't move for a few seconds and he came to, not really sure where he was or what day it was. We called the ambulance, administered some first aid to make sure he was OK and stayed with him.
A few minutes later his mate must have figured he wasn't behind him anymore and found his way back. Getting a gauge for how much he remembered his mate asked him if he remembered what they saw at the bottom of the mountain, which he didn't. He was rather dissapointed at this as apparently there'd been a bikini model photo shoot they'd come across and now he had no-one to back his story up anymore.
Would've been nice to stumble across that one though.