Time for something that will make me laugh.

Essentially this is about the Jimmy Kimmel show. He constantly makes fun of Matt Damon. When he finally gets Matt Damon on the show, he does a long running gag of his where he announces the end of the show and apologizes to his guest that they didn't have enough time. They laugh and move on. Matt apparently thought with the history of Jimmy poking fun at him that he was serious, yelled "I'm fucking Matt Damon" and stormed off. So Jimmy had even more material but Matt got revenge as seen here:

And Jimmy's revenge: