Is Talisman the one where the main character befriends a werewolf (or something) in another dimension then they come back to here/now, go to a movie theatre and the werewolf falls in love with the smell of popcorn only to then completely freak out when they put put fake butter on it? (I think he says something like, why are they putting piss on it?)

I read it in high school (so late 80s),I don;t remember much of it.