To prioritize earning or saving money over spending it.

Saving a substantial amount of money to invest.
If I want to get something nice for Christmas, I have to start stacking up before I stock up.

If you want to make good money buying shares, you have to stack up before you stock up.
by ErKTM November 19, 2021
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Two women, 69 position, Motorboating each others boobs
69 Short Stack Motor Boat Rack Attack. Two women motorboating each other in the 69 position
by FDAU01 November 16, 2010
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andandaanannat a supermarket... you control the guy or the women who runs the rurunurr... brings out the carts ononnonon on a forklift... WHAT HAPPENS?
Have you ever committed a 1.2 billion... so you go ahead and stack spaghetti sauce at a store in real life.
by [[[[[[[[[[[[[[[[[[[[[ September 28, 2021
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drug stack

A drug stack (or simply "stack") is taking several drugs at once. It can have potential health risks, so they should only be attempted by professionals.
1.) My grandpappy used to take a drug stack of L-dopa, blood pressure medicine, and diabetes stabilizers, and wash them down with prune juice.

2.) Candy stacking is a drug stack consisting of ecstasy and acid.
by Zoinqce March 05, 2023
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Side Stack

When playing DOTA, it's similar to your side hoe. The Stack you play with just to get off.
"Man Jeff and Brian are totally my side stack" said Alex
by wings4eva February 18, 2015
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Stack Trace

* A step-by-step account of how one got to the current topic.

From computing, where a program (usually with a bug) prints several lines of information explaining how it arrived at a condition it wasn't programmed to handle.
"...and maybe I should be working out more often. Uhh... Can I get a stack trace?"
"Sure. We were talking about how you were addicted to Netflix, then how you couldn't believe Blockbuster didn't read the writing on the wall, then you were talking about not remembering the last time you walked into a Blockbuster, and then mentioning the membership card is still in your wallet, and then you were reminded about your mortality because of how old that makes you."
"Oh, that makes sense. So, yeah-- you wanna go to the gym?"
by Fox Piacenti April 14, 2021
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On a Stack no Lack

this sentence is used as a extreme level of Deadass, this goes beyond just saying "on a stack" which means extremely decades, " on a Stack no lack" means your are very deadass to the point where there is no lack in your deadass.
example:
friend 1 : your girl cheated on you with me.
friend 2 : your joking ..haha
friend 1 : no am for real on a stack.
friend 2 : cant be .
friend 1 : am on a stack no lack.
friend 2 murders friend 1, no doubts.
by niguser October 06, 2022
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