Stacking Thirds

When three men each have a third (1/3) of an erection, and combine their efforts to achieve one (1) full erection.

Damn Girl! My friend and I think you're kind of fine. When our buddy-who sort of agrees-gets here, we'll be Stacking Thirds to Folsom Prison.

by Dogstar Reeves July 22, 2010

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seat-stacked

When a female has extra ass. She don’t need no cushion her seat is stacked.

When a female has extra ass “She don’t need no cushion she is seat-stacked.”

by Count Krolock and Missy February 4, 2021

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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 October 7, 2008

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Smoke Stack

The measurement of a bongs full capacity reaching the top of the neck but does not include smoke inhaled. Usually used in the context of bong that needs to be cleared or when newbies need others to milk it for them.

commonly shortened to "stack"

ex.1
"She cleared like 3 stacks out of my straight shot.."

ex.2
I don't wanna finish that stale smoke stack!

by KHANO June 22, 2011

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