I can see why people don't like this episode. Dash really seemd like kind of a jerk. I guess it was just that she likes buckball so much.

But she has done cheerleading before:

I got kind of annoyed with them saying "over and over and over again" over and over and over again. 

Zecora wasn't very helpful with the rhyming, meaning her rhyming is just a natural thing zebras do.