To drink the contents of one's beverage. Used especially when alcohol is concerned. Literally to tilt the bottom of one's glass upward until it is empty.
The bar closes in 10 minutes. Bottoms up, gentlemen.
by Becky C March 15, 2008
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1. Coitus a tergo, a sexual intercourse where a man is behind a woman, both kneeling. Also reffered to as doggy-style,dog-fashion.

While doing it bottoms-up she was moaning like crazy!
by necrotism May 21, 2006
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A word some intellectually inferior person aka Nathan Thompson, uses in an "argument" to refute claims of ships disappearing "bottom up" on the horizon.
"Ships disappearing bottom up is a bottom up fallacy, ships only do that because my ass is so cavernous that it actually swallows the ships not the horizon, it is my anus not the curve" -Nathan Thompson
by Thaants November 9, 2020
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It means to chug a drink (most likely alcoholic) until the glass's bottom is facing skyward
Drink it bottom up to tell how strong you really are!
by PenPoint6 May 25, 2016
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Bottom Up Libertarianism

A new political platform dedicated to improving the quality of life of Americans based on inalienable rights of human beings, while at the same time allowing it to flourish as a leading world power. This is an alternative to the current two party system that merges the most admirable values/policies of both parties, thus fostering cohesion and unity.

The number one priority of Bottom Up Libertarianism is ensuring freedom of all Americans. This includes freedom of speech, religion, right to bear arms, choice over one’s body, and a completely free market. With less restrictive market regulations, corporations will be able to be able to focus on innovation to strengthen American GDP.
The next priority of this platform is acknowledging that social inequality exists but that focusing on identity politics is not a remedy, but rather a catalyst for further division. Instead, taking an economic perspective on solving this inequality is a more effective approach. If a certain demographic group lacks opportunity, enforcing action to correct this directly will end up causing adverse effects on the rights of not only other demographic groups, but the rights of the individual. The solution on this matter is to utilize economic resources to channel capital into the institutions and infrastructure of underprivileged communities based off of data analytics to set them up for a brighter future. This in turn will spur growth across all classes of America.
Bottom Up Libertarianism is the ideal American future.
by skatmandiddlybop December 16, 2022
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