cebuano slang. Use as a noun to call the attention of a friend.

Slang term used to refer to one's best friend/Home-boy.

a young, male, usually from the westcountry and usually white who is loud, antisocial, ignorant a total twat and often appears to be a stereotypical chav. Many bai's have either a criminal record, or just a general scallywag. However calling someone a bai is not an insult, but more of a statement used in a situation and his friend says "geddon bai!"
Bais originate from mid/east devon.
A classic, textbook bai, would often be wearing a white sports jacket, short unnecessarily gelled hair, a fake gold chain necklace and a cap worn loosely on the back of the head. The resting hand position for a bai is with the middle finger up.

Often used in Cork Ireland as another word for boy. It is literally the word "boy" but is pronounced "bye" because of the Cork accent.
It can be used in a friendly manner or to confront someone.

Born before the internet/
Born after the internet

Coined by graphic designer and artist Sameer Farooq

Maritime Slang; bai has many meanings, usually means good friend

Bye (as in goodbye) in Lojban (the logical language.)