Bill Maher and filmmaker Michael Moore took a pledge to stop Donald Trump from reaching the White House.

“You and I are going to take him down. You and I,” Moore told the host of Real Time on Friday night’s episode. “No, seriously. This is the end of Donald Trump. He is not going to the White House.” Maher added, “You tell me where to show up, I’ll be there.”

When Moore sat down for an interview on Maher’s HBO show, the host asked, “From now until the election — I’m just gonna ask everybody on this show, I don’t care if it gets boring — how do we stop Donald Trump?”

The director behind Where to Invade Next and Bowling for Columbine answered with an anecdote from his encounter with Trump. “I was on a show with him 15 years ago, on a talk show, and the producer came over to me and said, ‘Um, Mr. Trump’s afraid to go on the show with you, that you’re gonna do something or say something.'” He then went over to shake Trump’s hand and found him to be “scared and whiny.”

Watch a clip from Maher’s interview with Moore below.

Moore already expressed his feelings towards Trump when he stood outside Trump Tower in NYC holding a sign that read, “We Are All Muslim.” Maher, meanwhile, discussed the presidential candidate a great deal on Real Time, likening Trump’s public persona to that of Andrew Dice Clay.