On a TI-83/89 scientific calculator, pressing the 'MATH' button and then the '9' button prompts a function that enables the user to find the answer to a type of problem called a definite integral within a few keystrokes. The alternative to this is doing it all by hand, which is very time-consuming/tedious. So, by simply using "MATH-9" you save yourself some time and a headache. This can be loosely applied to situations in life that require work, but whoever is supposed to be doing that work is lazy/uninterested so they opt out of it by finding a simple alternative.
Bob: Ugh, my girlfriend was bugging me to mow the lawn all day!
Charlie: So did you give in or what?
Bob: Nah, I just MATH-9'd that shit and paid some neighborhood kid to do it.
Charlie: So did you give in or what?
Bob: Nah, I just MATH-9'd that shit and paid some neighborhood kid to do it.
by Rutherford Jones June 29, 2009
Get the MATH-9mug. Being so 'uncool' that within a large group of people your deliberately isolated and stuck with all the rejects.
by Mimi 'BabyFace' Adams July 21, 2009
Get the Table 9mug. by JesusADNLAZARBUM August 4, 2019
Get the 9/20mug. 
Bob : Dude did you hear what happend yesterday (9/11)?
Jake: Yep....Alot of people are gonna get pissed off at that.
Jake: Yep....Alot of people are gonna get pissed off at that.
by Duplexblowfish December 25, 2009
Get the 9/11mug. 
Get the 9:45mug. 