Time of day (usually late afternoon to early evening) at which drinking a beer becomes necessary.
Hey, looks like its beer thirty, better grab me a cold one
by nihilistic0 March 13, 2004
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a hypothetical time of day uttered in response to the question of "what time is it." when consumption of said malted beverage becomes an event that is either inevitable or required to proceed with life as we know it in modern society. No other time expression exists with beer in it, ie. there is no beer fifteen, or quarter to beer, there is also not a half past a beer or beer forty five. If it is not exactly beer thirty when someone asks you just say its getting close to beer thirty.
what time is it?

its almost beer thirty.

see also: beer:30
by nick May 9, 2005
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Half Past Time for a Beer...you're WAY overdue for a cold one and should've started drinking a while ago but weren't able to because you had to finish something up first. When you're finally to the point where you can actually sit down and enjoy a beer that you've earned or need, that's beer thirty.

Well, the work day is over, and it's definitely beer thirty. Any one care to join?
by rap6 January 19, 2008
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it is the act of expressing ones want or willingness to drink beer no mater what tie it really is
Bud:Hey its beer thirty.
Miller:Yes
by Philip Fry January 20, 2011
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In states where the liquor laws require that alcohol no longer be served after 2:30 a.m., beer thirty is the deadline by which alcohol much be purchased, lest the party come to a screeching halt.
"Dude, it's almost beer thirty and we're out of Coors. Better make a run to the store."
by Corvallist March 17, 2006
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thats when it's time to start downing some cold ones with your homies,,usually after work.
co-worker: hey man,, what time is it
You: It's Beer thirty,,time to roll out
by BmsCat February 11, 2009
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beer thirty is every minute of every second of every hour of the day...its WHEN you WANNA drink a beer..... which is ANYTIME!!!!!!!!!
some dood: hey whacha doin?\

some other dood: drinkin a foedee!

some dood:its like 6 am!

some other dood: yeah i know!!!!! its beer thirty!!!!
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