"I brought fun by the gallon to our pal Jimmy Fallon," the "Gutfeld!" [and self-proclaimed king of late night] said on Friday night's monologue. "It went so well all the way home I could not stop talking about it with my Uber driver [displaying a picture of "Late Show" host Stephen Colbert.

Fox News host Greg Gutfeld made a rare late-night crossover, hugging Jimmy Fallon in his first appearance on NBC's 'The Tonight Show.'