WATCH: Stephen Colbert pricelessly mocks Trump for not knowing how to construct a sentence

On Wednesday, "The Late Show" host Stephen Colbert mocked President Donald Trump for not knowing how to construct a sentence.

On his way to Texas Trump "yelled" at reporters in a long rant about the border wall that made very little sense.

"A lot of wall is going up and every place we build a wall is less and less," Trump said.

"My heart is racing in a panic trying to follow that sentence. At this point I think he is just reciting avant-garde poetry," Colbert joked.

Watch below: