Donald Trump said he has “the best words.” He will tell you, without asking, just how smart he is. He’ll remind you, without asking, where he went to school. He’ll blather at you, without asking, just how stupid every other person is who doesn’t agree with him 100%.

As such, it is really funny to see a study released by Carnegie Mellon University that says Donald Trump’s grammar is at a fifth grade level:

Donald Trump might have trouble if he ever appears on “Are you smarter than a fifth grader?” An analysis of the speeches of Republican presidential candidates by researchers at Carnegie Mellon University found that The Donald’s grammar is about that of a fifth grader. Trump’s speaking style — often rambling and seemingly off the cuff — has become one of the many bizarre hallmarks of his entirely unconventional campaign. He remarked recently that he is highly educated and that he has “the best words.” Trump also scored lowest in vocabulary, coming in at the seventh-grade level.

To be fair, the study wasn’t exactly kind to Trump’s rivals:

The study, entitled “A Readability Analysis of Campaign Speeches from the 2016 US Presidential Campaign,” didn’t find Trump’s rivals faring much better. Ted Cruz, Marco Rubio, Hillary Clinton and Bernie Sanders all scored between sixth- and eighth grade levels.

Of course, this is exactly the kind of thing Trump will go crazy over. He doesn’t care if somebody can pick apart his foreign policy ideas or shred his absurd theories about trade. That kind of thing is insignificant to him in the grand scheme of things.

Look at his obsession with Megyn Kelly of Fox News. He is still going after her based on a single question she asked him in a debate last August.