The Prediction, Calculation, Measurement, and Severity of one or more Situations in which everything involved is in the Fucked state of existence.
Person 1 "I just found out that my girlfriend of 5 years is actually my cousin who went missing 17 years ago and she knew the entire time!"
Person 2 "Bro that's some serious Fuckonometry!"
A term which can only be used against you by Lightning McQueen himself after successfully having sexual intercourse with your mother.
Lightning McQueen: "I fucked Your Mom, Shit Lips!"