a word computer geeks use to describe something they find fun or silly.
geek #1: Man last night at the lan party was killer!

geek #2: MAO!
by CashCar August 12, 2003
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often used in substitution of: dude, man, guy, person.. etc.
by asherah July 28, 2003
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MonoAmineOxidase-Inhibitors.

MonoAmineOxidase-Inhibitors (MAO Inhibitors. MAOIs) are drugs that inhibit the enzyme monoamine oxidase. There are two enzymes that break down dopamine, epinephrine, and norepinephrine: Catecholamine-O-Methyl-Transferase (COMT), and MonoAmineOxidase (MAO).

MonoAmineOxidase-Inhibitors are effective antidepressants that make you happy. They help prevent the breakdown of Dopamine, Norepinephrine, and Epinephrine (adrenaline). Dopamine and endorphins are what make you feel happy while the dopamine combined with norepinephrine are what motivates you to do things. MAOIs include but are not limited to: Selegiline, Parnate, Deprenyl (racemic, D-Deprenyl + L Deprenyl), nordeprenyl (racemic), Ethylnordeprenyl (racemic), D-Deprenyl, Parnate, Phenelzine, and Pheniprazine.

MAOIs can be combined with: Modafinil, low dose Adderall, low dose Ritalin, Kratom, 7,8-Dihydroxyflavone (tropoflavin) Memantine and low dose Adderall, Afobazole, Opicapone, Diphenylprolinol, and Modafinil and Kratom, Methiopropamine, Prolintane, and more.
I took 20mg of Selegiline (MAOI), 25mg 7,8-Dihydroxyflavone (tropoflavin), 40mg Methiopropamine (MPA), and 3g Kratom and I was happy.

The next day, I took 20mg of Selegiline (MAOI), 50mg Opicapone, 25mg 7,8-Dihydroxyflavone (tropoflavin), 40mg Methiopropamine (MPA), and 3g Kratom and I was superhappy. These MAO Inhibitors are great.
by CognitiveFuel December 15, 2022
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It's Vietnamese slang for "go quickly".

"What part of "Diddy Mao" don't you understand, Skinner?"
-The Simpsons

"Mao! Diddy Mao!"
-Deer Hunter
by Da Troof123 January 12, 2009
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To be 'in the mao' means to be in. This could include getting in with a girl or a guy. Additionally, itm can also be used as a synonym for 'sick' or can be used when you do something cool (scoring a goal in soccer).
"bro, he's in the mao with Jennifer"

*scores a basket in basketball* "INNN THE MAO"

"dude are you itm with her?"
"It means in the mao (itm)"
"OHHH yeah dude im itm"
by thej-fresh September 1, 2015
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a total angel from heavennnnnnn omggg. she damnn pretttayyy and has a gorgeous personality. Plus, she is talented and willing to share her opinion of life to her friends. Smart and mature. An absolute gorgeous. A best gift from god anyone could have ever imagined. stay sassyyy MAO JIA
MAO JIA: omg did you just MAOJIA ?
Friends: yup, i scored 100 in my quizzzz
MAO JIA: you go gurllll. Continue being MAOJIA. I scored 10 100s in a row. dk when can i stop getting full marks. im so tired of the figure 100. jiayouuu you still have nine more to gooo
by sassyyyyyyyyy February 18, 2019
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