Continuity mistake: Just when Mr. Bean's hiccups are over the guy sitting on the table with him takes his right hand up to the book and has his left lower arm on the table. But after Bean hiccups again he suddenly has his right hand down again and his left hand on his book.
Revealing mistake: When Mr Bean's book falls apart, he tries putting the book back together, and he holds one page up to the camera and it has a slight reflection as if it is glossy paper. As far as I know old books like the one Mr Bean had don't have pages like that. It's an obviously fake book.