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2 definitions by Becky C

 
1.
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 14, 2008
 
2.
Toasting your mates for a drink; equivalent to "bottoms up".
"Here's to not remembering any of this in the morning. Cheers big ears.
by Becky C March 14, 2008