Expression used to describe something negatively-a replacement or substitute for "the worst." It originates from the word "bratwurst." "This song is the worst" becomes "this song is the wurst," which becomes "this song is the brats."
A brat is a person that always gets what they want and the rules are bent in their favor. They end up with the best of everything - with legal clearance and priveledge.
Then after he left his last high paying job in sales - he was asked to work as a manager in the executive branch overseeing the long term assets. He is such a brat, did you see his new maserati?
