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. 9 desember you can be as weird as you want.
-why are you acting so weird today?
-because it's universal weirdos day.
-why are you acting so weird today?
-because it's universal weirdos day.
by anonymous October 24, 2020
Get the 9 desembermug. 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. 9/11 is an overused meme.
Oh my God 9/11 was an inside job
Or
9/11 couldn't have been an inside joke because the planes hit the outside.
Or
I caused 9/11 .
Or
9/11 couldn't have been an inside joke because the planes hit the outside.
Or
I caused 9/11 .
by PositiveJack September 4, 2017
Get the 9/11mug.