Bring your own *insert "B" noun here*.
However, I have seen people insert non-B words, because people really are stupid.
BYOB usually stands for Bring Your Own Beer, but some people can't grasp that concept.
by Johnny Rocketfingers December 2, 2003
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Bring Your Own Booze. A variation for those who have moved on to the harder drugs
Hey Tommy Lee, BYOB tonight. You cleaned out the liquor cabinet last night
by Bungalow Bill October 18, 2001
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an acronym for Bring Your Own Brownies.

Brownies are delicious and fabulous.
Jess and Emily are having a brownie party! It's BYOB because we don't have enough to share with all our friends
by emsies November 8, 2010
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Leave Your Job, start a business and BYOB.
by SamTC February 18, 2017
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"B.Y.O.B" (Bring Your Own Bombs) is a Grammy Award-winning song as well as the first single released from System of a Down's fourth album Mezmerize. It is a politically charged song and was written to protest the Iraq War.
byob Why don't presidents fight the war?
Why do they always send the poor?
by venomize23rd February 25, 2009
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Bring your own Bondage. Used by hardcore hardcore kids.
"- BYOB tomorrow night? Marcelus' basement.
- Uhmm uhmmm hmm"
by r_geolol October 1, 2015
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Bring your own beverage.

Some people just don't drink beer ;)
Dick: Hey party's on tonight, BYOB
by cass lim June 4, 2005
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