Excerpt from: How to Avoid an Orc Rampage
Orcs by nature are a rather large and violent people. Some theorize that their great ancestors once stubbed their toe on a peice of furniture and swore vengence on all man made structures. There is also the school of thought that Orcs are giant claustrophobes and destroy buildings as a way to avoid their fears. This however fails to explain the destruction of bridges, chairs, fences and other non wall based structures.
Whatever the case may be Orcs break things. Many things. Large or small. It is our advice to you, should you encounter an Orc that you-
Oh dear. Looks like the rest of the book was destroyed.