Bai 

Another way of saying "good-bye," or "bye."
Why it is spelled in such a way is beyond me, but it is catchy. The word bai is used in the famous internet phrase "kthxbai."

I have to go now, but ill see you later. Bai.

Bai by Kylezors October 14, 2008

bai 

a westcountry originating term for boy.
a statement for expressing ones excitement, enthusiasm, admiration or even happiness.

ARRRIGHT BAI??

(someone has done something impressive)
GEDDON BAIII!!

bai by glen55wa March 14, 2011

bai 

short for 'bien tai', which in mandarin means perverted, deviant, abnormal.

dude why u gotta be so bai?

bai by smocata July 30, 2003

Bai 

Slang substitution for "boy" used in the countryside around Northern Ireland. Usually used in a greeting,

Greeting- "Awrite, Bai?"

Further Examples, "I was in Starbuck last night, bai. One of the waitresses smiled at me and I says, "Awrite girl?" She says, "Awrite bai?"

Bai by Whu Flung Dung December 27, 2009

bai 

bastardization of 'Bye,' widely uttered by net whores and chodes

Chloe says:
g2g bai

Chimu says:
Speak english, biatch

bai by bastardized bottomburp March 23, 2003

Bai 

1. a more efficient way of saying "farewell" and "fuck you"

2. an extremely effective word used to win any argument (best used when all other insults have been said + especially effective when said to parents)

3. an alternative way of saying "My name is ______. I'm __ years old, and I don't give a f*%k."

5. fruit juice full of antioxidants

Brett: You are a repellent, ball busting, fart taster.
Jake: Yeah, but yo mama is a revolting, heavily built, cock monkey.
Brett: BAI.
(Brett therefore wins the argument.)

Bai by cusp February 27, 2011

Bai 

A Filipino slang (Cebuano) meaning friend, pal, homeboy, homie, etc.

Sup Bai, how u doin'?

Bai by Shahram Senerpida April 4, 2009