if it's rainy out and your throttle cable gets stuck at full speed on your puch cheyenne in 1st gear, and the rear brake won't catch, i don't suggest using the front brake.
it makes the bike slide out from under you and sends you sliding down the road in a comprimising position with a rear wheel going ape shit.
i also don't suggest you pick it up and jump on it while it's going off the rails on a crazy train, and I definitely don't suggest using the front brake a second time, because it sends you sliding accross the ground the other way.
I DO sugggest you pick it up again, and leap on again, and then after you are done fishtailing and it catches, throw it into second and then slow down so that the engine can die.
I would also suggest installing a kill switch.
and I definitely wouldn't do all of this while drunk, or try and ride it home the next day.
just thought i'd pass along some advice.
oh, and puch cheyenne's rule when they aren't trying to kill you.