To Pay the Duck

Since developing a friendship with a Brazilian EE professor, I have been spending time each day on Duolingo to learn a bit of Portuguese. I also read some Brazilian news and follow the ongoing protests for the removal of sitting president Dilma Rousseff. Today I encountered the expression to pay the duck, which is mentioned in this article.

Exactly how it's said in Brazilian Portuguese, I have yet to confirm, but perhaps it is pagar o pato.