A boook is normaly a small, often ginger, indiviual who is very childish, silly and fun to be with. They often make silly remarks that everyone is thinking but not saying, they get in trouble alot and are exceedingly accident prone. They are often found to be college students, as after the student period they tend to grow out of their boook like nature.
Guy: God your such a boook!
Girl: Is that a bad thing?
Guy: No I love it.
Guy1: You know Dave?
Guy1: He's such a boook, he really annoys me.