Trump this week admitted it is “highly controversial” for him to say “such a horrible thing” that a president “should not have a learning disability.”

But he then added: “The president of the United States, Gavin Newscum, admitted that he has learning disabilities, dyslexia, everything about him is dumb.”

Kimmel fired back, referencing first lady Melania Trump’s anti-bullying initiative: “Anyway, be best everybody.”

He continued: “This is a man who’s posted thousands of misspelled words over the last 14 years. He thinks ‘mutilization’ is a word in the English language.”

And the real zinger: “In that clip we just showed, he referred to Newsom as the president of the United States. And he’s worried about Gavin Newsom’s learning disabilities? Everything about him is dumb?”

Watch here: