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Used to express extreme astonishment, surprise, shock or incredulousness. Has it's orgins in the Persian community of Great Neck, New York. Although it is not recognized as an offical Persian expression, it is used mostly by first & second generation Persian-Americans who combined English expressions with Persian enunciations; a "Spanglish" for Farsi speakers if you will.

See also Voy
Benny: "Hey Zadeh, did you see the ass on that Chic"?
Zadeh: "Vai! I'll catch up with you guys later"

Zadeh: "Yo Benny, I banged that chic last night, what do you think of her"?
Benny: "You mean the one with the pancake ass, flapjack titties, and five o'clock shadow? VAI!
by Benny Beez November 20, 2006
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A morning erection that is naturally caused as the brains enters the REM-deep sleep phase. At this stage, the body's skeletal muscle structure relaxes and causes hypervasodilation in the capillaries of the body, resulting in solid erection.
After sleeping so soundly and having a great night's rest, it is no surprise to wake up with a vai.
by Dr. DJ December 06, 2011
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Vietnamese word meaning "very very", but with more emotion. Mostly used by young people.
by Tom Mai 4881 November 27, 2016
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Whats wrong archer? you jealous? so tell me, who do you think as superior to Vai? i would LOVE to know.
howwwwwwwwwwwwww abbbooouutttt nooooooo
by diamondsandrust May 07, 2005
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A term used to refer to a guitar player that considers themself to be great but is actually mediocre.
Go to a Guitar Centre on a saturday...there are many of them on display.

bring earplugs
by Archer of Fish December 22, 2004
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Awe bud, you gonna vai to that stekkies joll?
by SkaNkY_FeET August 13, 2018
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