Wow, it's been a while for me, too.
I just did a Google site search (because the built-in search software, like on other forums I know, likes to omit words for being too "common" despite the fact that they would, y'know, help), and saw this sketch mentioned in other threads, but not here, and if I think about it, it may actually have scared me a bit.
It was the one with the Count and this rocket scientist who was ostensibly there to launch a rocket, but each time, it'd blow smoke, then sputter and stop. And then the Count lets on that it was all just an excuse for him to count backwards. It may have been the scientist's screaming as he ran around. It probably should have sounded frustrated due to him being there for nothing -- he could've counted backwards on his own if he wanted, no pretext needed -- but he sounded terrified as the Count counted backwards... "in Transylwanish!"
Also, another aspect of it: I think I realized that if it were to come anywhere close to lifting off, that thing would really put out a lot of smoke, more than it did, and that it wouldn't be a good idea to stand that close to the base of a rocket that size.