Billy Crystal has been working so hard on the prequel to Monsters, Inc . that it's brought out the animal in him - he's become a little hoarse. (Thank you, we're here all week).

“I spent five-and-a-half hours today for our fourth session on Monsters Inc. 2 ,” he told an audience at a 20th anniversary screening of City Slickers . “That&rsﷺquo;s𓄧 why I’m a little hoarse.”

Seriously though, the 63-year-old actor said he was really enjoying🅰 working with John Goodman agai𝄹n: “We’re having a blast together. It’s really a great script, it’s really funny.”

The prequel film is called Monsters University and sees Crystal and Goodman return to the roles of Micha🍷el 'Mike' Wazowski and P. 'Sulley' Sullivan.

“The Pixar people are geniuses. It’s 10 years since the first movie. Yeah, it’s crazy. And it’s a prequel. They’re in college. It’s how they met, it’s how Michael and Sully meet, and plan to become scarers at Monsters, Inc. So this movie ends where the other one starts,” Crܫystal revealed.

&ldqꦓ♛uo;It’s college pranks with monsters. And I wear a retainer. Mike has a retainer.”