Quack 

A quacks is someone who is lame. loser or a nerd . You don’t want to be a quack.

instead of going out with everyone, she stayed in and acted like a quack.

Quack by Khellie June 24, 2020

Quack 

A term used by young children or people suffering from speech impediments, to describe cocaine.

"My dealwer is gonna gib me some quack!"

Quack by High as duck April 29, 2020

Quack 

Quacking in the manner of a mallard is what one should do when faced with any ridiculous and unneccessary comment from any idiot in any social situation. It is commonly used by me as a term of derision and contempt.

Idiot: Wow! Did anyone catch that episode of Dawsons last night. It was totally cool!

Me: Quack.

Quack by imnothere27 February 3, 2010

quack 

The sound a Jesquigoduckster makes.

"QUACKKKKKKKKK"

quack by affraid_of_quack January 29, 2009

quack 

An annoying friend who always seems to bring up stupid points and goes on and on about them.

A person who if they were talking on on a SNL skit, the people would laugh at even though he wasn't trying to funny, he's points are just stupid.

"Oh hey guys, I was drawing a circle today and...(30 minutes later) pretty cool huh"

quack by Pat November 3, 2004

Quack 

To masturbate, male or female

So my girlfriend is on her period this week, and ive had to settle with quacking off.

Quack by Same Cup Ward August 15, 2008

Quack 

The strangely annoying squawking sounds that most ducks make.

The duck quacked madly at the flying hamburgers.

Quack by Mongooose August 2, 2009