Any job until they fire you

You could probably get away with it as a University professor teaching low-level lecture-style undergrad classes as a way to get everyone's attention at the start.

Decibel meter reviewer

Disabled and I get to shout it when I'm overwhelmed and need some calmness.

Library quiet room monitor?

Stand-up comedian, particularly if you make it part of your bit.

Set director before rolling film

Low-competence teacher.