20 Trump Twitter Targets

After Trump says "this guy on CBS has no talent," Colbert jokes, "I will not stand here and let you talk that way about James Corden!"

The president continues to rail against the late-night hosts online and in public, as he did Monday at a rally in South Carolina, so Stephen Colbert enlisted Jimmy Fallon and Conan O'Brien to figure out how to respond.

The late-night competitors united for the cold open of "The Late Show" where "lost soul" Fallon called "low life" Colbert to touch base. Their back and forth touched on the various tweets Donald Trump has made about them, with Fallon saying he was "mostly whimpering," while Colbert was "busy having no talent."

"[I] heard he said some pretty bad stuff about us," Fallon told Colbert about Trump's South Carolina rally. "I heard he said we're all no-talent, low-life lost souls."

"Well that's not right," Colbert replied. "That's Conan." And so he called the TBS late-night host who feigned ignorance that Trump was even president, but urged the network guys to "be civil: "If we’re not careful, this thing could start to get ugly."

Of course, it's far too late for that, as they are now clearly in Trump's cross-hairs. The president railed against Jimmy Kimmel as well, who's been his most outspoken critic in late night, calling him "terrible," as reported by Time. He then called Fallon "a lost soul," while he wouldn't even refer to Colbert by name.

"The guy on CBS, what a lowlife," Trump said. "I mean, this guy on CBS has no talent!"

Colbert immediately stood up to defend this unspecified CBS employee. "Listen, Mr. President. I will not stand here and let you talk that way about James Corden," he joked. "He's very talented. He sings he dances. Have you seen his Carpool Karoke with Paul McCartney?"

After being told the president was referring to him, Colbert determined Trump was afraid to say his name because he was in Colbert's home state of South Carolina. "I am South Carolina's second-favorite celebrity, right after the confederate flag," he joked.

You can watch Colbert's full response to the president in the video below.