It's a much more hilarious story if I can tell it out loud. There was something in the way she said it with the same intonation each time that just got me. She said it over 100 times in a 50 minute class period once. That's a five-word phrase every thirty seconds, on average. It was annoying, to say the least.
It was a large class, and the day I recorded her, I wrote down a tally each time she said it. Partway through the class, the person sitting next to me watched me mark a few tallies, figured out what I was doing, and gave me a huge grin like she'd been wanting to do it too.
During this period of time, I dreaded going to that class because the teacher during this period of time kept saying the same thing over and over during this period . . . of time.