KFC is food stacking with it's new double down chicken sandwich. Something like that should get your picture on the wall while smiling and wearing a bib.
by CocoSantango September 6, 2010

by tommy September 19, 2003

a special education person. A retard. A mentally challenged person. Sometimes used as a pay out/insult.
by ellie,, February 9, 2008

Anal sex orgy in which men are stacked on top of each other, resembling Pringle potato chips in a can. Each person is penetrating the person below them while getting pounded from behind at the same time. Depending on how high or low you are in the group of bodies, there is a difference in the amount of force per thrust. The bottom person rarely survives with their asshole intact.
by Tutty Putty December 7, 2009

When one shits on the ground, and another shits on top of the original shit. Usually very steamy and mountainous.
C-Mac: "Someone took a steamy shit on the floor!"
Tony: "That is one big shit, it looks two things did it. Some people may be Shit Stacking."
Tony: "That is one big shit, it looks two things did it. Some people may be Shit Stacking."
by Mustafa_Raza_ July 18, 2012

This is when no less than 9 homeless guys pile into the back seat of your car (generally a Prius) then lay down on top of each other stacking one by one then jack each other off.
Hey Lou! That there fuck party we had behind the dumpster last week damn near broke my dick off! Maybe tonight when everyone gets here we can just jump in this Prius and do an old fashioned Stack and Jack...So we can have a night off and I can ice my dick...
by Larry and Rex and Benny July 31, 2018

when a group of men insert their penises into the next mans anus and continue until they are horizontally / vertically stacked together
by NotGaines September 2, 2017
