Tenacious D: The Pick of Destiny ending / spoiler

JB and KG have a rock off with the devil in which if they lose the devil will get to take KG back to hell to be his "little @$&%$." They win and the devil's horn is cut off so he is not complete and has to rteurn to hell. They take back the horn to their apartment in which they turn it into the bong of destiny and use it to write songs.

Submitted by Conor B.