You have been duped.

The bank duped investors into buying bad mortgages.

I was duped into thinking he was trustworthy.

It is the business of the politician, the "science of politics", to make you believe that the law protects you and your interests, when it merely serves to keep up the system which robs, dupes, and enslaves you in body and mind.

If I were some kind of rocket scientist, then this algebra would be super duper easy peazy.

He was duped by being fed false information.

At the same time, they allowed themselves to be duped and led in circles by a structure of politicians and bureaucrats.

Rima said Yanni was super duper cute.

Don't be duped by this charlatanry, Yankev.

I call it the super duper missile.