Josh Peck Trolls John Stamos With 'Full House' Theme Song in Funny Clip

John Stamos' reaction is priceless.

Josh Peck couldn't resist trolling his friend John Stamos while driving through San Francisco.

On Saturday, the Nickelodeon alum uploaded a TikTok featuring Stamos behind the wheel of an RV, about to cross the Golden Gate Bridge. The platform's automated voiceover says, "He probably gets this a lot."

That's when Peck begins to sing the Full House theme song.

"Shut the f--k up," said Stamos, pretending to be annoyed.

Peck captioned the TikTok, "We were in San Francisco, and I just couldn't help myself."

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Stamos, 59, shared the clip on Instagram the next day. He captioned it, "Long --s ride w/ @shuapeck."

Hours before sharing the video, Peck, 36, filmed himself on the Universal Studios lot in Hollywood for his Instagram Stories.

"That's right, y'all. We're at Universal Studios!" said Peck in one of the stories. "Oh Hollywood, it's so glamorous with its buildings and its streets and infrastructure."

He also jokingly griped about studio tours, filming himself parked behind guests.

"I'm behind a tour right now. Like, I know you want to have a nice time and I know you're on vacation but some of us need to get to work! Some of us need to get to work!" he exclaimed.

He continued, "I need to try on costumes. I'm a professional. I'm out here saving lives playing dress-up."

The former Grandfathered co-stars haven't shared yet what prompted their RV trip, but it looks like they're having plenty of fun. Hopefully this means the friends will share screen time together—or at least make some more great TikToks.

Next, Kieran Culkin Has Hilarious Comeback for Fans Who Mistake Him for His Brothers.