A white psychiatrist
"That quacker won't prescibe me the good SHIT!"
by Das Harlot January 30, 2006
Top Definition
When a person laid a loud fart sounding like a duck
I heard someone laid the biggest quacker
by Anonymous June 29, 2003
a white person who has no idea whats going on around him. associated with Cracker but not the same meaning. Plural Quackers
Let's go mug the f*ckin' Quacker over there
by Ninja Bunny December 06, 2008
A fantasy prone mid teen to late 40 year old guy that wears flip flops, big dog t-shirts, sports a ponytail, and is more than likely to be overweight.

The name is derived from the duck like sound emitted from the voice box of this particular form of life.

Almost every single Quacker is into the fantasy tabletop game Warhammer, and recently Warhammer Online Age of Reckoning.
I wanna kill me some Elves! QUAAAAAACK!

Any sane man would respond, "I believe we have entered a pond my friend, because of all these damn quackers!"
by A Trat March 24, 2009
A very white duck.
The duck over there is such a quacker.
by jew pirate December 22, 2008
When one has to defecate but does not make it to the toilet in time and soils their pants.
Hey Eric remember that time you took a jump on your snowboard, with a a turtle-head, and shit yourself.- To pull a quacker.
by You wanted to fight me January 12, 2010
Specially assigned Duck crackers found in remote places in Africa
Winston Churchill : How is your Duck today?

Cheif !zaboule : I don't know last time I say him he was eating some Quackers
by Nuggets From Hell July 13, 2009
Traditional - An evolved form of The Shocker. A quacker is when you apply the traditional shocker to a woman while watching Howard the Duck, eating Peeps marshmallow treats, and/or holding two pringles chips in your mouth to simulate the appearance of a duck.

Slang Usage - A quacker also applies to any molestation of female ducks including but not limited to a human male twisting his sausage into a counter-clockwise spiral in order to insert into a female ducks spiraled vagina.

Seriously, female ducks have spiraled vaginas…look it up.
Jeff – I heard you gave Mary a quacker last night!!
What did you do, eat some Peeps or make a BBQ Pringles duck-bill?!

Ted – Uhh….neither. Mary is my pet duck. I twisted my yank into a spiral and banged her duck vagina.
by Vernon Livingstone December 13, 2012
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