When Alice Cooper talked to the Muppets, he kind of forgot the puppets weren’t real…

Back in 1978, Alice Cooper was the guest star on a now-legendary episode of “The Muppet Show”.  And as surreal as it was for audiences to watch it, it was even more surreal for Alice to film it.

He says, quote, “After a while, you start talking to [the puppets], and they talk back!  After three days you’re in your dressing room and Kermit pops his head in and goes, ‘Hey, you had lunch yet?’  

“And I go, ‘No. You wanna go have lunch?’  He goes, ‘Yeah, OK.’  They become people.

“We’re rehearsing a song, and I go, ‘Piggy, why don’t you put your head on my shoulder while we do this?  It’ll be funny if you just kind of lean over.’  ‘Oh, yeah, good idea.’  I said, ‘OK, let’s try it.'”

Source: Ultimate Classic Rock