Clip shows Larry David and Bernie Sanders reacting after discovering they're related

Sen. Bernie SandersBernard (Bernie) SandersTrump: ‘Clapper has now admitted there was spying on my campaign’ Overnight Defense: Trump decision on Korea summit coming 'next week' | China disinvited from major naval exercise | Senate sends VA reform bill to Trump Senate sends major VA reform bill to Trump's desk MORE (I-Vt.) and Larry David — who impersonated Sanders on "Saturday Night Live" last year — were both surprised to find they were actually related.

In a released clip from the season four premiere of "Finding Your Roots," a PBS program in which celebrities learn more about their lineage and history, the two are told that if they both have long identical stretches of DNA then it means they are cousins.

When told Sanders is his cousin, David responds: "What the hell?"

"That is really funny. That is amazing. ... Alright, cousin Bernie," David says.

"You're kidding," Sanders says in response, laughing.

"That is unbelievable," he adds.

"People say to me, they talk about Larry David, and I say he does a better Bernie Sanders than I do," Sanders says.