I was sick, so I went to see a ducktor. He was a quack.

“if it looks like ahh duck and Quack like ahh duck then…its an afflack!”

— Madea

Quack! -Primrose Everdeen

— Hunger Games

The empiric easily degenerates into the quack. He does not know where his knowledge begins or leaves off, and so when he gets beyond…

— John Dewey

Quack: A boastful pretender to arts which he does not understand. A vain boastful pretender to physick; An artful, tricking practitioner in physick.

— Samuel Johnson

“I had a quack in the floor. So, I had to use ductile.”

— Andrew Sturm

“Quack, damn you!”

— Jamie Hyneman

A quick cure is a quack cure.

— Margaret Thatcher

I done put the pressure to every thug I knew. Quack quack to a duck and a chicken too.

— Nicki Minaj

“A company of wolves, is better than a company of wolves in sheep's clothing.”

— Anthony Liccione

“It’s not what I think? If it looks like a duck and walks like a duck...” I imply with a shrug “...well then you…

— K Bromberg

“Quack, quack,” I answer, wanting to add Mr. Ducksworth, but that may be too much.”

— Nessa Morgan

“Rat-a-tat-tat." "Quack." ”

— Kate Angell

“As far as I know, only politicians can make this kind of miracle staying more than 30 years of their entire life lying or…

— Frederick Vanderbuilt

Ducks quack loudly before a rain

— Proverb

“It’s not what I think? If it looks like a duck and walks like a duck...” I imply with a shrug “...well then you…

— K. Bromberg