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.
A gobblygoo is a quibble-dob squobby doppler finger bum. Simplified, someone who's a hardcore furry and renowned fursuiter; also masturbates to anything but a human.
"Burn all gobblygoobers."
"Those furfags don't deserve their human rights; as if they want to be human, anyways. Burn all gobblygoobers."