Paul Mescal used his stint as host on “SNL” to debunk several “ugly” stereotypes about people from his native Ireland in the show’s opening monologue.

The Gladiator II star said he was “very proud to be Irish” and noted that they had been through “a lot.”

“Centuries of British occupation, the Great Famine, mass emigration, that U2 album automatically downloaded to everyone’s phones,” Mescal quipped.

He then cleared up a number of “nasty” rumors about the Irish, including the “insulting” and “ridiculous” claim that they had sex with their cousins.

“We have sex with our second cousins,” he joked.

He added: “People also believe that the Irish hate the British people. That’s not true, we just don’t see them as people.”

Mescal turned his attention to the Notre Dame Fighting Irish mascot and people who asked him if he found it “offensive.”

“Not at all, we do the same with the Americans. In fact, my high school’s mascot was the ‘Fightin’ Fat-Asses,'” Mescal said.

He then used the post to make light of his fashion choices by dismissing the question of whether the Irish wear kilts.

“No, that’s the Scotsman. “Traditionally the Irish wear short shorts,” said Mescal, a self-proclaimed “big advocate” of the look, as he smiled as a photo of him in tiny shorts appeared on the screen.

Watch more of the opening monologue below, featuring a cameo from “SNL” cast member Marcello Hernandez in short shorts.