well... something along the lines of jumping on the back of a fast moving train is "extremely dumb" because it is "extremely" dangerous" and risky, due to the fact that falling off would cause whatever person that is "dumb " enough to try it to die or suffer "extremely". Was that a rhetorical question or did you really want him to spell it out for you? I hope there isn't more where that question came from, because if there is, you seem to be of the same IQ level as hawt, which is pretty sad in and of itself.