Cranial Flatulence
You would feel like shooting yourself too if you had just derived by hand the line element, gradient, divergence, curl, and Laplacian in spherical and parabolic coordinates. Our physics professor has this annoying habit of giving us ridiculously tedious problems, which basically take hours of brute force algebra and simple calculus to complete.

"The Thought Processes of a Self-procalimed Genius"
Flatulence means fart. Hee hee, Adam said fart.
Wait a minute! cranial...brain...cranial...flatulence...fart...cranial...flatulence...brain...fart...brain fart...
...Oh I get it, brain fart!!
No joke... well... actually thats a lie.
Actually, that's a saying that Zaraza frequently used. I still don't understand what it actually means, but it has a very odd connotation, and he always used it to refer to mentally taxing things.
A brain fart isn't something really mentally taxing, it's when your brain simply doesn't work for a few moments for something you really should be able to do.
Jeez, I just finished deriving Laplace's equation in spherical coordinates for Calc III, but you have to do all that?! That's considered standard "homework"?
After all those partial derivatives, I feel like a machine.
Maybe you are a machine? Now that's an existential thought...