I was dowhilling at a resort last year, the guys had gone way ahead and I was with my good girlfried who was behind me on the trail. I hear this "wham! thump! and the breaking of branches...

Des? Des? Are you ok?
Silence.
I start hiking up the trail.
and then the giggling starts. Lots of giggling.
She's landed in bushes totally unhurt, but completely tangled.
I have to give her a yank to get her out of the bushes.
It takes two of us to pull the bike,undamaged out of the bushes.
We are laughing so hard our stomachs hurt.