1)A word said to someone who has either said or done something stupid, gay, ridiculous or asks a question already answered multiple times.
2)Expression of disbelief, usually over something too good to be true.
Can be described as another way of saying 'get out'.
1)Person1: These four lokos taste soooo good its like an orgasm in the mouth.
Person2: Ok NUPPP
2) Person1: I drank 6 four lokos, 24 beers and was only buzzed last night.
Person2: Nup
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