The sound a duck, goose, or the likes, makes.
Commonly used for censoring.
Skibidi.
The sound uttered to signify that someone just got scammed or publically shamed.
A guy fails at picking up a girl and walks back to his friends. He is met with a chorus of "Quaaack."
or
"That sucker got seriously quacked by the salesman at GoodGuys. Buyer Protection Program? Quack!"
One might use the word quack, at high school, to alarm friends that a teacher is approaching and they should stop doing whatever it os they're doing wrong.
If a friend is smoking or on their phone, say 'Quack,' to casually tell them a teacher is approaching.
Someone that eats a lot of pizza and drinks a lot margherita's and that lives in a fish tank.
your such a Quack