I'm sure everyone's got one.. I've got two that I'm fond of. Both were while riding my 1981 Yamaha YZ250H. One was when I was going down a steep sand hill in 3rd gear. I somehow got lucky and had a sand hornet fly in my helmet between my goggles and chin guard. Unable to stop because of the sand, I tried smacking the creature from the outside of my helmet as it flew around and became even more pissed. Needless to say, the bugger bit me in the ear and drew blood, then proceeded to immediately crawl down my neck and sink it's stinger into my neck before I tore it in half with a massive flick. I ended up going off the trail and half-way up the berm in the process and almost hit a tree. My other favorite was flying around a trail corner in 3rd as well (I love 3rd lol) and I approached what appeared to be a fairly good sized rock, probably about 16 inches in diameter. I stood on the pegs, preparing to get some sick air. Well, being that it was a rock that was clearly in the ground, I expected to hit a stationary object. What I hit ended up moving with me, and though my front tire barely cleared, it caused my rear tire to pop up extremely high unexpectedly and nearly threw me over the handlebars. I slammed on my brakes and regained my composure after the family jewels braced my fall on the gas tank only to see the rock that I hit slowly stroll out of the trail. I had hit a turtle! I checked him out and he didn't have any cracks in his shell, so I think I must have just spooked him. Alright guys, your turn!