In 2009 Chief Justice John Roberts flipped some very important words in President Obama's swearing-in. Four years later, it appears the two still haven't figured out how to do get this tradition quite right. Here's the big "oops" moment from today's inauguration:

"The office of the president of the United Sta—" is the flub, if you can call it that. President Obama seemed to cut himself off instead of saying the full word "States," and he sort of froze up. Here's our GIF of Obama upon realizing he (sort of) screwed up:

And here's a freeze-frame: 

Four years ago, if you recall, it was Justice Roberts messing up the oath. And all that official practicing on Sunday seems for naught. It won't help much now, but here's how the oath of office supposed to go:

I do solemnly swear (or affirm) that I will faithfully execute the office of President of the United States, and will to the best of my ability, preserve, protect and defend the Constitution of the United States.

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Alexander Abad-Santos