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An expression that is used to add emphasis on any comment that someone else made, usually one with a humorous intent or used in celebration. Used at the end of a comment.
Example 1:

David: Yo Mike you're an ugly fuck!

Ben: Boii !

Example 2:

Yvonne: OMG we have a snow day tomorrow! Boii !
by Ron Burgundy is the tits January 28, 2011
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Commonly used by chavy cunts to address their friends because 'HI' isn't aloud to be spoken of any more unless you want to get shanked
'what's up boiis'
by GetRolexed February 12, 2015
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A word used by the stereotypical chav in either an online conversation or via text message as an alternative to the word 'boy'.
There is no REAL reason why they use the word 'boii', but the two i's (ii) seem to be pretty popular among the chavs in the 14-18 age group.

There are other words such as

daii (day)
doiin (doing)
iino (i know)
musiic (music)

Whats worse, is that some people use the word 'boi', Message to the people who say 'boi', this doesnt make you one of those lazy typers, as its the SAME amount of words as 'boy', it just makes you look stupid.
Grace: rarrtii dat boii woz buff
Meaning: That boy was attractive
by Giorgio Enziano April 20, 2008
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A another word for boy.

Usually used at a end of a sentence. A phrase or something to spice up your words.
/girl1/ veronica was like "omg im not ur friend anymore" like boii i was neber yo friend
/girl2/lol u go girl
by Yorolexgirl April 19, 2017
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