A completely platonic, heterosexual event whereby two men defecate in the same toilet at the same time. As the bottom member of the stack, it is important to observe a proper tucking technique, lest an embarrassing and unsightly mess ensue. Once a double stack partnership is established, it shall persist for the duration of the bottom member of the stack's terrestrial life. Once the bottom stack member passes, the top member is free to pursue a new partnership, excepting that the new bottom member is related to the previous by marriage. A widowed bottom stack member forfeits their freedom to establish a new partnership.
Brian and Josh were a feared duo. They fit together like a jigsaw puzzle, their bodies working in perfect accord. Their office knew not to fuck with their double stack.
by von dildus August 11, 2008
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Putting two hits of ecstasy into one pill for a higher price that will have a greater effect.
T-mac: that girl just took a double stack of e.
by fish121 June 7, 2006
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A gimmick used by E dealers when they sell to idiots.
The dealer claims that the pill is "double stacked", ie contains twice the amount of MDMA and sells it for a higher price.

It's a lie used to shift more pills and pull in more profit.

Double stacked pills often are slightly larger, because they contain twice the amount of filler.
If you buy double stacked pills frequently, get off E and go back to pot. Hard drugs should only be used when you know how they work and what they do.
by EIAC May 19, 2009
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when 1 pill has the same effect as 2 pills of the same kind of drug
is that X double stacked?
by VCO June 19, 2005
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1. somone with botha big ass and tits

2. a pill that has the same effect as 2 of the same pill

3. a PMA pill being sold as "thick" an MDMA (exctasy) pill
1. jennifer is double stacked

2. see look its double stacked, it'll hit you better

3. to fred: lets make him really ill
fred to sally : gove him this - look double stacked
*gives punter PMA*
to punter : look its thicker
by blowjob bill June 18, 2007
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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!
by M. Weazel January 30, 2006
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