AP Stacking 

The process of taking as many AP courses as possible to increase your weighted GPA and look better for colleges. Tends to be done in the 11th grade, or Junior year.

The rigor of taking even more than 2 AP courses forces one to develop proper time management skills, as they’ll have extracurriculars and a social life to juggle.

Guy 1: Yeah, I’m taking 7 APs Junior year. Gonna be absolute hell, but I need that 4.8.

Guy 2: Wow, and I thought I was AP stacking. I’m taking 4, and self-studying for 1.

Guy 3: I’m taking two, but they relate to my major so it should be fine.

Guy 4: You guys are taking APs?

AP Stacking by xX_LordGaben69_Xx April 30, 2021

Shit Stacking 

A technique used for the digestion speedrun where one has loaded a constipation stool slug and charges it with lots of taco bell diarrhea to create an explosive charge that is really useful in combat

"this dude's a real pro at shit stacking he got a whole squad wipe when they were all trying to piss cancel."

Shit Stacking by AntonioSwift77 March 25, 2022

Cup Stacking 

A slang term for male masturbation. When the hand motions of cup stacking are simulated the relationship between cup stacking and masturbating is fairly evident.

Billy is the cup stacking champion of the would

Cup Stacking by Backhand Cup Stacking Champ October 12, 2009

sport stacking

An awesome sport where you stack cups up and down in a particular way. Only done by awesome people that have awesome speed, awesome hand eye co-ordination, and most of the time no life. The less of a life you have, the better you are.
People that can't do sport stacking just dis the people that can because they're jealous and claim they sped the video up.
Somebody that does sport stacking is called a "Stacker"

Stacker: My record in sport stacking is under 7 seconds!

Jealous guy: Yeah right, prove it

Stacker: Sure (does it in under 7 seconds)

Jealous guy: ...you sped it up.

sport stacking by Simoneister December 19, 2008

Duck Stacking 

The hottest new underground sport, full of CRAZY, INTENSE ACTION. The goal is to stack as many rubber ducks atop each other as possible before your tower falls. Competitive duck stacking circles can be found in underground clubs if you know who to ask.

"Hey man, have you ever tried Duck Stacking?"

"Tried it!? Dude, I did a quadruple-helix megastack of 5 ducks, yesterday."

"Fuck you, man, you're full of shit."

Duck Stacking by Hotels March 18, 2009

Double Stacking 

The act of taking a crap in the filling tank of a toilet. When someone flushes it later they will get a surprise when the tank fills up with...well you know.
( by the way the filling tank is the big white thing thats behind you when your going number 2, has a lid on it, it's full of water and a few moving parts)

Jake got caught double stacking at wal-mart again!

Double Stacking by M. Weazel July 16, 2008

bracelet stacking

Wearing more than two bracelets and a watch on one wrist.

Commonly seen in people who cut themselves trying to hide it.

Also seen in people making a fashion statement.

Person 1: Where'd you get those bracelets?
Person 2: I got this one from Hot Topic, this one from Wal-Mart, this one from my parents, this one from my boyfriend-
Person 1: Girl, you're bracelet stacking.

bracelet stacking by Caty-Marie September 12, 2005