I'd guess each section is unique so there is no frequency analysis; the next section is picked at random instead of saying "Whoop whoop" is followed by "gundam style" 20% of the time, by "hey sexy lady" 50% of the time and by another "whoop whoop" 20% of the time.
Yeah, thinking about it some more, that seems to be correct. It isn't what people usually think about when they think about Markov models, but it qualifies.
Actually, I think this kind of Markov model might be a better introduction than some of the others I've seen, since it's extremely simple to understand.