Stephen Colbert and Bernie Sanders troll Mayor Pete Buttigieg for Napa fundraiser

"The Late Show with Stephen Colbert" skewers Mayor Pete Buttigieg. "The Late Show with Stephen Colbert" skewers Mayor Pete Buttigieg. Photo: The Late Show With Stephen Colbert/CBS Photo: The Late Show With Stephen Colbert/CBS Image 1 of / 4 Caption Close Stephen Colbert and Bernie Sanders troll Mayor Pete Buttigieg for Napa fundraiser 1 / 4 Back to Gallery

You’d have to be living in a cave to not know about Pete Buttigieg’s presidential campaign, but thanks to a recent fundraiser, now even cave dwellers are hip to Mayor Pete.

But like many of his other recent campaign events aimed at affluent donors, his outreach to the spelunking demographic targeted millionaires who use their caverns to store priceless wines.

RELATED: See photos from Buttigieg's lavish, private Napa winery fundraiser

On “The Late Show with Stephen Colbert” last night, the host skewered Buttigieg for its elite and cultish appearance event, hosted in the Napa Valley at the Hall Rutherford wine cave. The dinner featured $900 bottles of cabernet sauvignon, chandeliers made with 1,500 Swarovski crystals and an onyx banquet table.

“You’ve gotta have onyx,” says Colbert. “You know how hard it is to get human sacrifice stains out of walnut?

RELATED: 'Angry white mail': Late-night hosts mock Trump's 'bonkers' letter to Pelosi

Bernie Sanders’ campaign also joined the fun, registering the domain “peteswinecave.com” and using it as a fundraising portal of their own. Colbert quipped about a potential Buttigieg response:

“Buttigieg hit right back at Bernie’s favorite drink, ‘PolandSpringBottleThatGetsRefilledWithTapWaterUntilTheLabelFallsOff.net”

Watch the full segment below:

Dan Gentile is a digital editor at SFGATE. Email: Dan.Gentile@sfgate.com | Twitter: @Dannosphere