Throwing up bucket loads of gang signs against your enemy. Most often in a particularly fast pace to display a show of force.
by CatDog122 August 13, 2021

Stack for a diesel truck that blows so much smoke it gives the illusion of fog therefore the slang foggin stack
by Reckneck69yeeyee February 19, 2019

When a man stacks his testicles on top of eachother and wraps them with saran wrap to hold them in place, creating a replica of a second penis. Recommendation: Use your new ball sack-stiffy to penetrate her vagina while also having anal sex for a double dong combo.
He filled both of her holes when he stacked and sacked himself to create a scrotum-sword to penetrate her punany while he also shot the club in her brown starfish.
by Tiffany MashPotatoes May 26, 2020

by Rocky 12 October 14, 2023

The worst band ever formed. They can't sing and use 4 chords in all their songs. Unlike Kurt Cobain, the 4 chords that are used don't sound effective. Their fans are mostly teenyboppers who can't spell
by KiwiBass January 12, 2010

1. whomever in your group of friends that is the biggest has a "pancake stack" for a penis.
2. Large in girth
2. Large in girth
by Bud E Love May 5, 2003

A large quantity of something in one place. The term is derived from the Halflife third party mod "Natural Selection," in which a large quantity of players would attempt to pick the "Marine" team (as opposed to alien). Because the selection process involved physically walking through a portal, the players struggling to be marines would jump and crouch at the entrance, causing what appeared to be a stack of marines.
When I bought Counterstrike: Source, it wasn't DVD format so I ended up with a marine stack of CD's.
by Butato May 18, 2009
