My voice teacher returns after being away for three weeks.

Voice teacher: So, what did you work on?

Me: I worked on relaxing my jaw.

Voice teacher: Excellent! Let's sing.

(I sing for half an hour.)

Me: Ok, my jaw is really tired of relaxing now.

Voice teacher: ???

Me: Am I like the only person who finds relaxing really tiring?

Voice teacher: . . . . . . . Yes. You are.

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Ok. :(