Hm, everyone have seemed to do it by accident the first time, as did I too. A tractor cut in front of me from a field and I had to brake pretty hard behind it. I waited for the couple oncoming cars to get past me and twisted my wrist. Couldn't get enough umph so I shuffled the box down in a pretty rapid succession flipping the throttle open after each shift. When I got to what I think was 2nd or 3rd gear and twisted the tube the bike suddenly jumped up on me so that the front wheel was pointing almost straight up for a second or two! I let go of the gas and the bike came down pretty hard on the front wheel but I instinctively shifted my weight back so I had control of the landing, shifted up once and shot past the tractor with revs close to the redline. Certainly made my point to that hayseed... At first I was all like F yeah but a bit later realised what would have happened had I spooked, the local paper would have had a great front page pic of a black/red honda sticking out from underneath the old couple's chevy kalos following me. Well, at least now I know it can do it and be more aware next time (don't dare to stunt much wich such an old bike that has over 100k in the meter, plus amongst traffic it's about the dumbest thing a rider can do...)