A widespread drinking game popular among college students. Rules are complex but well known. Play involves, among other things, marshmellows, wine, and the film Mean Girls.
Hey man I'm looking to get schwasted... care to play Stack 'Em Up?

SEU is the best game ever!!
by UVAforLIFE April 5, 2012
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When a female is blessed with appealing mammary glands which have the tendency to distract males focus, she is stacked up.
Mark-"How'd your date go? did she have nice boobs?"
Matt-"Yeah that ho was STACKED UP!"
by Dr.vonlinkphipps December 1, 2011
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A formation used by military and law enforcement in which individuals line up single file along the same wall as the door they plan to breach in order to get through the door quickly and efficiently
“ Dude I think that house is about to get raided, I just saw a dozen guys with ATF jackets on stack up outside the door”
by Marchambone June 13, 2022
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To get a fuck load of money
I know i'm going out soon so till then fuck it im winning so im gonna stack up
by Dylan69 April 5, 2008
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A common term a hardcore 2nd Amendment Supporter will tell Anti-Gunners that want to confiscate guns.
Usually, these lefty's want government goons like the Alcohol, Tobacoo, Firearms and Explosives or known as the ATF to confiscate your guns instead of themselves as they are cowards.
Lefty: You don't need your AR-15. We're coming for them.
Average Gun Owner: You gonna come get them yourself? Stack Up or Shut Up!
by AnCapGigaChad June 7, 2022
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When two people (typically males) sleep on top of each other, facing each other, penises dangling.
"Hey Clay, that was so pleasant sleeping stacked up with you the other night." -Petre
by mmmmNOPE! October 9, 2013
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