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1. Nio
"no" or "Know"
Why I don't Nio

NIOOOOO!!!!
by krugball Feb 20, 2004 add a video
2. nio
An emphatic term of opposition to a given proposal. An utterance from a bratty boy or girl.
from the car in front of us at Dairy Queen drive-thru "Nio!!! That is nyot what I ORDERED!"
3. nio
the coolest guy ever.
nio will be at this party tonight. AWESOME!!!
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