AJATT 

a method for learning japanese, AJATT stands for all Japanese all the time. The method involves constantly living and breathing Japanese.

guy 1: how are you learning japanese

guy 2: I'm using AJATT baby!

AJATT by kame-hame-ha April 13, 2009

arattuba 

(noun) an athlete who gets wasted then has a really bad hangover causing them to miss their sporting event the next day.

Emily: Yo ali why weren't you at practice?

Ali: Sorry breh i pulled an arattuba and was puking all day.

arattuba by Ratta de A October 31, 2010

Abattoir Blues

From the song by Nick Cave & the Bad Seeds, used to describe the depressed feeling you get about the modern world in general. An abattoir is a slaughterhouse, so the term, in a more in depth way, means you feel the world is lining itself up for slaughter, much like cows do at a slaughterhouse.

Man 1: Hey, are you all right? You've seemed kinda depressed lately.
Man 2: Oh, it's okay, I've just got a case of abattoir blues.

Abattoir Blues by Pocketflan May 25, 2009

AJTTOTD

Archer's Just The Tip Of The Day
Acronym used by Sterling Archer on twitter when giving out advice.

AJTTOTD: If a woman is lingering around your house the next morning, give her cereal for breakfast. Nothing says, “go away” like Raisin Bran

AJTTOTD by Mr5150 June 8, 2014

AGATT 

Used often in motorcycle groups to designate wearing "all gear all the time" as in helmet, gloves, boots, jacket and so forth.

When you ride this weekend remember AGATT!

AGATT by afj_member September 18, 2012

AIATT 

pronounced: AIGHT
stands for ALL IN ALL THE TIME
hebron band's great catchphrase

you gotta be AIATT

AIATT by clarinetsplaylouder September 25, 2017

APATT 

or a.P.A.t.T.
Refering to British Avant Garde act.
Originally meaning "a Positive Approach to Totality" written on the side of a the artists first original recording but going on to mean anything and everything to their fans.

a Positive Approach to Totality
a Pathetic Attempt to Tune
american Parents Against tired Truckers
almost Perfect Apple tarts Tonite
a Place At the Table

aPAtT support omni-core

APATT by B reeeves April 19, 2006