Lime-Seriously, I saw the thing later, it was huge. One of the trails I am racing in a few weeks had a landslide of rocks, I am not happy about that part of the trail doesn't seem stable but hopefully I can fly through there!

I have been hit by acorns, I sometimes think the squirrels throw them. Luckily it is more just odd sounding on your helmet, doesn't hurt. Then again the ones you are describing aren't what we have here. We do have Burr Oaks at work and those acorns are pretty beefy, I think they would hurt.

Total threadjack - Yesterday we were riding and the biggest grasshoppers ever were on the attack! They were BIG and would latch on to your jersey, one hopped on my helmet, into your legs. It was insane, it is where my next race is I hope I don't have to deal with them attacking.