The actor and comedian made a recent appearance on an episode of the Howie Mandel Does Stuff podcast, where the host surprised him with Billy Corgan, the Smashing Pumpkins guitarist who previously revealed that the pair might be related.

In November, Billy Corgan revealed Burr might be his half-brother while on the “Howie Mandel Does Stuff” podcast. Earlier this month, Mandel then secretly brought on the Smashing Pumpkins frontman during Burr’s interview. Burr shared he was not a fan of how the meet and greet went down.

Bill Burr says he 'didn't appreciate' being ambushed with Billy Corgan on Howie Mandel's podcast: 'Howie did what he did because he is a Hollywood whore and he doesn't care what happens.'

Bill Burr said he did not appreciate Howie Mandel surprising him with Billy Corgan after the guitarist suggested they could be half-brothers.

Bill Burr isn’t happy with Howie Mandel. After appearing on “ Howie Mandel Does Stuff ” podcast, the “Old Dads” actor, 56, doubled down on his disappointment over being blindsided when Mandel, 69, ambushed his interview by bringing out The Smashing Pumpkins frontman Billy Corgan, 57, who revealed he might be Burr’s half-brother.

During a Monday appearance on "The Rich Eisen Show," the comedian, 56, slammed Mandel for surprising him with Billy Corgan during a recent podcast interview. Mandel framed the ambush as a family reunion, as the Smashing Pumpkins frontman previously theorized that Burr might be his half-brother.

The comedian reacted to the forced encounter by shaking the Smashing Pumpkins frontman's hand while telling Mandel, "You're an a**hole."

Burr said his father was a "piece of s---," as he explained of his tension with Corgan, "It's not that I don't like him, it reminds me of all of that s---."

Bill Burr was not happy with Howie Mandel after his interview was crashed with a surprise appearance by Smashing Pumpkins lead singer Billy Corgan.