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16.
A very gassy, extended fart when in a confined space and the wind has nowhere to escape, for example when sitting on a chair or under the covers in a bed. It derives from the stacking up of the gases, which the culprit is desperate not to disturb and the subsequent stacking up of guilt as s/he knows it's only a matter of time before s/he's discovered.
A: Somebody stacked. B stop stacking!
B: I didn't. It was C. He stacked under the covers. I felt the whole bed vibrate.
by lovelee09 April 16, 2009
 
1.
other term foe using gang hand signs....
thoze shit are stacking at us....
by jay_naztah February 14, 2005
 
2.
making large amounts of money; usually kept in stacks
That nigga Lil Wayne is stacking to the ceiling.
by FoxMc March 03, 2008
 
3.
The most awersome game ever played ever. Not Jenga but very much like Jenga. However not Jenga. Stacking is a game only played by cool people.
Lets go for a jolly good game of Stacking
by Pepe the goat November 11, 2010
 
4.
Verb 1. Hitting on a girl so hard that no one else can even get close to her, esp. when you have absolutely no chance. 2. The ultimate form of cockblocking.
Things were going well with Tracy until Steve got drunk and started stacking on her. What a buddy fucker.
by TheTeeTom September 13, 2013
 
5.
the act of gently taking your lover by the hand,

leading her to the bathroom,
you both strip your clothes off,
the male sits on the pot.
with his legs spread.

roughly place your lover's legs on you,
so that she is sitting on your lap.

depending on your level of intimacy,
you can be facing each other,

or turned away.

most english speaking countries prefer the turned away position.

the male starts by expulsion and voids a salvo into the glistening white porcelain bowl.

this is the female's cue to do likewise.
she drops the kids off at the pool between the male's legs,
while he is spraying some mud.

this the highest form of togetherness and spiritual communion.

(note : it is considered a technical foul to splash on your partner's legs.
so aim your anus with accuracy.)

wiping each other requires much dexterity.
(note 2 : for the ultimate in intimacy, you can each have a hand on the flusher in the spirit of loving cooperation.
some consider simultaneous pooping and flushing to be the apex or zenith of Stacking.)
"I really feel closer to Johnny after our first stacking session;
it was sublime!"

"Don't stack with Roberto, his hairy legs really itch."

"I thought Veronica would be really good at stacking, instead she splashed me ! Fucking Amateur ! "
by Turdly Bugglestein October 02, 2011
 
6.
when one girl gets on top another and u have sex with both of them.
i was stacking jenny and tiffany last night!!! it was great!!!
by rok_star May 20, 2008
 
7.
The act of multiple people taking a dump in the same toilet, one after the other, without flushing in the hopes of achieving ultimate cloggage.
Wanna do some stacking in the 3rd floor stall? Last time the janitor had to clean it out with a garden trowel.
by brs677 December 03, 2010