The audience booes the opening band so Nirvana only teases Smells Like Teen Spirit a bunch of times then messes with other songs on purpose

Explanation:

When we played Buenos Aires, we brought this all-girl band over from Portland called Calamity Jane,” Kurt recalled. “During their entire set, the whole audience—it was a huge show with like sixty thousand people—was throwing money and everything out of their pockets, mud and rocks, just pelting them. Eventually the girls stormed off crying. It was terrible, one of the worst things I’ve ever seen, such a mass of sexism all at once. Krist, knowing my attitude about things like that, tried to talk me out of at least setting myself on fire or refusing to play. We ended up having fun, laughing at them (the audience). Before every song, I’d play the intro to ‘Smells Like Teen Spirit’ and then stop.

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