when duck go quack it is saying you are a dumbfuck
by eaitsinagay January 2, 2021
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1. verb, to quack.
To talk crap.
2. verb, to quack.
To talk really fast so that only people on the same wave length or with special hearing aids can hear you.
1. What was Dr Mallet quacking about in Physics?
2. Jeez did you hear Laura quacking? Swear I don't understand a word she says.
by AJ_legend February 20, 2008
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A code word for quarter, as in a quarter ounce of smoke/weed.
"How much does a quack run?"

"Can you do a quack?"
by Laura Hill August 14, 2007
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In a cycle race, when riders are bumping and grinding for a better position in the peloton. This sometimes results in riders being pushed off the road or into the "gutter."
After the race, Tom exclaimed, "Riders were quacking in the peloton all day. I almost got pushed into the gutter several times."
by headofsteam October 6, 2013
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A term used by the supporters of conventional medicine to insult anyone that supports alternative medicine.
Alternative Medicine Supporter: I started oil pulling and using herbal tooth powder. The result is that my teeth are very white and my mouth never felt this good!
Conventional Medicine Supporter: What you're doing was made up by a quack artist! The results that you are seeing are a placebo and the medicine you're using doesn't work.
Alternative Medicine Supporter: How can you tell me that the results I'm seeing are fake? They are clearly real. Let the results speak for themselves! Watch me demonstrate.

(The Alternative Medicine Supporter reveals his teeth and that are so bright white that they stun the Conventional Medicine Supporter!)
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It's when you do an animal. Used a lot by Karthiks
I'm so quacked! That was some doge ;)
by cuckthick January 15, 2018
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