I would say follow them around the whole day and apply a quote to everything they do. Like when someone you don't like comes to talk to them, say, they have a cave troll!! That would most definetly trip them out. And it would be most fun.
Or just walk around reading the book to them. The vast majority of my friends think that I have a problem, and I need help. They just look at me and shake their head. It amuses me. I know mine was rather lame, but i just wanted to post SOMETHING!!!