President Donald Trump babbled on about wheels and walls throughout his go to to the U.S-Mexico border in Texas on Thursday. And the strange example left “ Late Night ” host Seth Meyers rather perplexed.

“ But seriously, what is incorrect with your brain? ” the comic asked. “ Did somebody change your Diet Coke with Nyquil? I imply, truthfully, the length of time till he simply begins reciting nursery rhymes? ”

Meyers then imitated Trump singing his own take on a popular kids ’ s tune: “ The buses, they all have wheels, folks. And the wheels on these buses, they go ’ round and ’ round. All through the town.”

The host later on discussed how Trump was “ annoyed ” about “ not winning the argument ” over his assured border wall “ and even he understands it.”

“ He invested 3 years making the wall the signature guarantee of his project and his presidency and it got no place, ” Meyers included.

Check out the clip above.