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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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Aug 11 Word of the Day
A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.
"My boyfriend has a total case of brain worms. He told me the cat was bugged so the Feds could listen in on us having sex..."

or

"You totally stumbled over that entire sentence. Can't speak English all of a sudden? What, do you have brain worms?"
by _Jez_ October 03, 2009
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2
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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3
A song by System of a Down, off of their fourth album "Mezmerize". The song is a gift from God himself.
Timmy: Have you ever listened to B.Y.O.B by System of a Down?
Jimmy: Hell yeah man!
by panicking! at the disco May 28, 2018
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4
Bring Your own Bagpipes

Used for hardcore Scottish parties.
'agad lad BYOB in morrow caint be shorung dese pipes.
by naaaaate November 24, 2006
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5
Bring your own beer, booze, bitch, and/or bombs.
Im having a party, byob.
by brenn April 26, 2005
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6
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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