quack 

refers to the act of "ducking" or purposely ignoring people's phone calls because you don't want to hang out with them.

"Ryan's been such a quack lately since he started dating Emily"

quack by swagpapi420 December 21, 2015

quack 

A charlatan at being a doctor of any kind.

My psychologist wasn't a quack because she behaved like a doctor.

quack by Ereck Flowers October 11, 2016

Quack 

Something weird and/or cool. A description of something that is odd yet awesome.

We saw a zebra riding a skateboard. "Man, that's quack"

Quack by Fippogrox December 10, 2016

quack 

The sound that a Cow makes.

Did you know that the cow goes quack?

quack by MC GingerPubes February 28, 2017

Quack 

- a sound that the duck does.

- slang word for a strong bond two people made in a short amount of time.

Levi and I have a strong quack. I quack him a lot.

Quack by souuu July 30, 2017

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.

Quack by do dogsarecool September 24, 2017

Quack 

This word is often used by the clam community as a way of communicating with other species. Except with bojac2ks...they hate them.

"Go quack yourself."

Quack by The quacking clam November 17, 2017