BYO 

Australian useage,short for Bring Your Own: unlicensed restaurant where you have to Bring Your Own grog, also similar party or barbecue

A BYO restaurant around the corner was sold

BYO by southernsky December 1, 2006

BYO 

Bring Your Own.
Name for a guy who always announces to bring your own but always scabs off others because he couldn't buy from a bottlo because he is such a pinner

Grant: Oi party tonight! BYO!
(At party)
Chris:So grant what did you bring?
Grant:I got denied at the bottlo, can i have a beer?

BYO by LOBSHA~ October 1, 2003

byo 

Word derived from a fat kid named Peachez.
The word itself has no meaning at all, he just throws it in the middle of sentences every so often cause he's fat.

Byo,we gamblin' tonite, byo"

byo by Grimler December 14, 2008

BYO 

Boot you out!

Senora Jennings: Im gunna Byo!
Ben: Oh darn! Another PSR.

BYO by Darina Glover February 4, 2010

byo 

Word derived from a fat kid named Peachez
The word itself has no real meaning to it, he justs throws it in random places of a sentence cause he's fat.

Byo, we gamblin' tonite, byo?

byo by Grimler December 14, 2008

Byo

A mixture of ‘Boy’, said in disbelief, and ‘Bro’, said in belief.

Byo, I can’t believe you’re cancelling on me again

Byo by AlexKoshy18 June 30, 2026

byotch 

basically, a more appropriate way to say 'bitch'

just don't say it to your teacher's face.

hey byotch, let's go shopping

omg, Mrs. Frizzle is such a byotch. (eye roll)

byotch by this byotch righ there January 10, 2021