I read this with nooras voice

"Neeeeeeeeeeeeeeeeeiiiiii"

Nei is no, the opposite of yes. Ikke is like kein in German, "not any." Jeg drikker ikke vann. --> Ich trinke kein Wasser. --> (lit) I drink no water or I don't drink (any) water. Drikker du vann? Nei. --> Trinkst du Wasser? Nein. --> Do you drink water? No.