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Acronym: Bring Your Own Beer. A party where the alcohol is not provided.
Wanna come over Saturday? We're having a BYOB party.
by The Grammar Nazi June 21, 2001
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BYOB is an acronym with several similar yet related expansions. The acronym is most often associated with a social gathering (a party) at which the host will not be providing alcoholic beverages; the guests are invited to bring a beverage of their choice for their own consumption.

Common expansions of the acronym include:

Bring Your Own Bottle
Bring Your Own Booze
Bring Your Own Beer
Bring Your Own Beverage
not applicable, see above
by jeff24 July 01, 2005
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Bring your own beer, booze, bitch, and/or bombs.
Im having a party, byob.
by brenn April 26, 2005
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abriviation for "Bring Your Own Beer"
Like in an inventation to a Low Budjet Party. "Don't forget to B.Y.O.B to get this party started.
by Steve-O-Nator May 30, 2006
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Bring your own Burrito,

used for hardcore mexican parties.
ey sanchez tonight is BYOB, you guys cleared me out last night
by Ashzor Polgzor May 29, 2006
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Bring your own Bible. Used by hardcore Christian kids.
"Hey, you comin to church tonight?"
"Yeah"
"Well, BYOB. I don't wanna share mine again."
by ultraviolentink July 25, 2005
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