Gobblygook
Most usually referring to some inane math equation (or a section of one) on the board, but can be used in other situations in which someone understands something but doesn't feel like going through the process of saying it out-loud.
"So you need to insert the exponent gobblygook into that other bogus over there..."
Gobblygook
A replacement word for bullshit.
"That policy change is a bunch of gobblygook"