"It's Always Sunny in Philadelphia" is wrapping up a wild season 17 with a "Golden Bachelor" crossover, which sees Danny DeVito's character Frank Reynolds heading to the Bachelor mansion looking for love.

And yes, it's just as unhinged as you might imagine.

For DeVito, tapping into the 'Bachelor' lore was a new experience!

"I had never seen it until they pitched it and I watched it and thought that would be really cool for Frank," DeVito told On The Red Carpet. "I can't say enough about how they were good to us."

Host Jesse Palmer plays himself and is witness the insanity that is Frank Reynolds.

"We do let it fly, you know," DeVito said. "I think once the guest star or whoever's with us knows that, there's no stiffness. He was great, man."

Wild ideas and having fun on the set has bee

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