Alice Cooper gets interviewed by Dave Grohl in disguise as Dave Letterman

To celebrate Halloween on Jimmy Kimmel live, Dave Grohl stepped in as a guest host and Alice Cooper, joined the show.

Foo Fighters', Dave Grohl appeared in Jimmy Kimmel's place dressed as host, David Letterman and chatted to the king of horror, Alice Cooper.

Alice Cooper shared his backstage pre-show ritual and talked about the well-known old photo of himself standing next to Kentucky Fried Chicken pitchman Colonel Sanders.

He also joked about Jimmy Kimmel Live!'s long feud with actor Matt Damon by showing throwing knives at a photo of the star.

Check out the hilarious interview above!