Was doing a bossa arrangement of Here's That Rainy Day with the high school jazz band I'm running (including some students I've been teaching for over 1-1/2 years):
Student: We should play Birdland instead, this song's boring.
Me: You're boring!
Student (sassily): Wow, you just verbally assaulted a minor. *That's* gonna be a mark on your record.
I have been teaching music across the Twin Cities since 2011. Along with seeing students grow as musicians and people, one of the joys of teaching is the ridiculous things my students say.