Back-stacking 

Inserting a full bottle of hard-A into your anus to get drunker, quicker.

"I caught my lady back-stacking a fifth of Beefeater."

Back-stacking by Ace Monroe May 31, 2017

damage stacking 

A term used in video gaming to describe damage (HP) to an enemy. For example, if one molotov causes 50 HP, then throwing 3 molotovs at something in rapid succession will cause the additional damage to add on, or stack, to the current damage per second. Example: if I throw one molotov, I will cause 50 damage. Throwing 2 more molotovs will cause 150 damage per second. (50+100 (2 more))

Throwing 2 molotovs at the Tank in L4D2 causes damage stacking - twice the damage per second.

damage stacking by gearsofwar3xXx April 11, 2019

shit stacking 

Short for bullshit stacking. It's a tactic bullshitters use to place a large enough stack of BS consecutively to basically exhaust the willingness of a rational person to unpack it. It's followed by the bullshitter using that lack of willingness as a "victory" for their viewpoint. It's a consequence of Brandolini's law. See Liz Wheeler and Jordan Peterson as shining examples of this tactic.

From facebook, today: "don't claim to be a spiritualist if you bash others beliefs and religions ... you may not do those things under the white light of god but i sure do, especially tarot readings. Do yall know the portals you can open up doing that?? so yes i go by god he is my protector and this is exactly why you guys need educated before speaking on things."
Me: Wow that's too much shit stacking for me to bother unpacking it.

shit stacking by Lu Dogg April 13, 2021

Mag stacking 

Binding or taping gun magazines together on a semiautomatic or automatic weapon to make it easier to reload a fresh magazine when shooting.

We are going out on a dangerous mission and we may run into a lot of enemy soldiers, so mag stacking is a must. gun, bullets, weapon, gun magazine, soldier, rifle, semiautomatic, automatic, machine gun, m4, m16, ak47

Mag stacking by joecoolthefool February 15, 2015

Haitian Stacking 

When multiple things such as boxes, shelves, books, cases, etc are stacked in a manner that is perfectly fine as long as there are no sudden vibrations or jolts. Similar to real life Haitian houses built in precarious locations.

Person 1: "Those moving boxes have Haitian stacking"
Person 2: "Well just like Haitian houses, they're fine enough unless there's an earthquake."

Haitian Stacking by AnotherpersonnamedMike January 16, 2010

Burger-stacking 

The act of buying burgers from mulitple restaurants and combining them to make on sandwich.

I went burger-stacking at McDonalds, Burger King, and Wendy's.

Burger-stacking by Ai-Fushi-No May 11, 2010

Power Stacking

In World of Warcraft in Arenas when the opposing team makes a hardswap to a teammate and pops all Cool Downs.

Taulfaym pop defensive CD's there POWER STACKING.

Power Stacking by Garrito June 5, 2011