Technically it doesn't go fast at all. It just goes through every point in the universe simultaneously.The Infinite Improbability Drive ship from Hitchhiker's Guide to the Galaxy as it can go infinitely fast.
Anything that happens to Tom Paris is, by definition, hilarious.The Infinite Improbability Drive ship from Hitchhiker's Guide to the Galaxy as it can go infinitely fast.
And for anyone who wants to say "well that's just comedy" I refer you to one of the contenders for fastest Star Trek ship, the experimental shuttlecraft on Voyager that went so fast it turned Tom Paris into a newt (he got better), and challenge you to say how that isn't also just comedy.