You know your student is a trombonist when you are talking to him about positioning his stand so he can see his music without hitting the stand with his slide, and...well...this:
Student: I can see my nose!
*he stares at his nose for a few seconds*
Student: I CAN'T SEE IT ANYMORE! MY NOSE DISAPPEARED!
I decided that was as good a point as any to end the lesson...
10 - Tuner
You know a student has been using their tuner a lot when...
Me: Tune your Eb.
Student: My tuner says it's a really sharp E natural...?
*he looks closer at his tuner*
Student: Why is it set to A=410?!
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.