Top Definition
The words in Vietnamese are: trời ơi
Choi oi, is how it sounds to my Australian ear.
It's an exclamation meaning Oh Dear, WTF, OMG, Oh Fụck, Fer Fụck's Sake, Oh Shït, Oy Vey, etc..
It's a versatile little exclamation.

From Wiki: The first sense is an exclamation of surprise.

The second use is always an expression of frustration, or some form of anger thereof.
Wife: I forgot to fill the fridge with beer.
Me: Choi oi !
by EverardG August 16, 2013
1 more definition
means the sky is blue in smlang
choi oi! ong choi sky is so blue and beautiful!
by Unsweetened LoVerr February 05, 2008

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