Stinky Cheese Face

This is more of an inside joke between everyone in my jazz band but some of you peeps may get it.
The picture, though odd, is actually my band director pulling a stinky cheese face.

The Definition of Stinky Cheese Face: When you hear something while listening to jazz that's so incredibly awesome, tight, or amazing, that you can't do anything except pull a "Stinky Cheese Face" (Contorting your face as if you smell stinky cheese)
*Yes, I know I just put a definition inside a definition about the defined word.*