is like the one I did the other day in Goosepond Park. That's where you accelerate up an incline, but you're really too lazy to give it enough watts, causing your bike to lose momentum, and then you start rolling backwards like in some bad cartoon, and you can't stop the bike, and you just keep over as the bike rolls in reverse. Fortunately I did not hit anything hard.
I did sort of discover that it's hard to do a totally easy day in the woods if only because at times the terrain demands 400-500 watt efforts just to keep the bike rolling forward. Oh well. It was a blast. Haven't really ridden the MTB in the woods (except for my short forays out with my dog Sam) this year. Gotta get out there once a week this winter.