quack 

an acknowledgement towards something most favorable

I want quack to get in my pants.

quack by Matt January 19, 2004

Quack 

A name given to a sussy impostor.

Quack is so weird

Quack by A1exTheAmbivert May 5, 2021

quack 

awesome guy who plays roblox

your being a quack

quack by deez nuts in your input August 2, 2021

quack 

1. One who is of methamphetamine addiction.
2. Someone who is really fuckin weird

1. Don't get near that fool, he's a quack.
2. He bought doughnuts for his cat, what a fuckin quack.

quack by Iron-man_matthew April 10, 2008

quack 

To de-pledge yourself from a fraternity/sorority by your own free will, or because of fear, A self "Kack"

-Named after an ex-pledge with the last name Quack

-He went and quacked himself

-So I heard he was quacked

quack by P-diddy April 3, 2004

Quack 

A Kawasaki motorbike.

"Can I 'ave a ride on ya Quack mate?"

Quack by Halo August 30, 2003

quack 

Stupid ones who believe that they are in an honorable position, though their entire reality is, in fact, based on a pile of crap

Psychiatry is a profession for quacks--no one can truly understand the human mind.

quack by JoeJoe321 February 1, 2009