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This is what you say when someone says/does something stupid.
Usually the hand is extended and is pointing towards the intended person.
Tony: I like hate Englosh class but love reading.
Half the class: Boi. Get on somewhere.
by Your Fake Polo December 09, 2015
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2
A slang term used for making fun/roasting someone
Boi u look like a turtle without a shell
by Proah March 24, 2017
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Boi is a very rare species of frog found only in the north coastal area or at the Gulf stream. They eat bees, flies, and sometimes birds. They are carnivores and, instead of using their legs, they ride a one cycle bike for transportation. They are light green with small, black eyes. They can also speak some of the human language!
" Oh, shet! Here come dat boi! " the young British man said. " Oh shet waddup! " said the Boi frog.
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A saying when someone does or says something stuipd.
Guy 1:"Hey, isn't Donald Trump the president of China"

Guy2: "BOI!!"
by Maddy_like_bruh January 22, 2017
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When you hear this word, know that it is a word of challange for dominance in a social circle. It is the initiation word for a bout of roasting.
".......BOI"
Oh my, it seems as if Brian is about to roast a fool."
by Mr Jag July 11, 2016
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Can Be Used When:
1) When You Hardcore Roast Someone Like He or She is Thanksgiving Dinner.
2) When You Be Trying To Explain Something That Shouldn't Need To Be Explained.
3) OH SHIT WHAT UP!
1) "Fight Me!"
"BOI WHAT DO YOU MEAN 'FIGHT ME?' YOUR ARMS ARE GODDAMN NOODLES AND YOUR NOSE CAN BE BROKEN LIKE UNCOOKED SPAGHETTI".
2) "So I'm Getting Back Together With Emily."
"Boi, She Tried To Snap Your Neck."
3) "DAT BOI!"
"Oh sHiT WhAt uP?"
via giphy
by TheAngeredGiraffe June 16, 2017
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