Ontario slang. Cheapest legally available beer. Between Oct 2005 and Dec 2008 the minimum price of beer in Ontario was $24 for a case of twenty-four. This minimum price has since been raised to $25.60 but the moniker "Buck a Beer" has remained for all beers that are sold at minimum price.
Guy 1 "Wow that beer's gross"
Guy 2 "What do you expcect for Buck a Beer?"

Girl 1 "That beer tastes great!"
Girld 2 " I know right? And it's Buck a Beer!"
by jianadaren1 October 7, 2009
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