How to Booby Trap a Book
This is a very mean prank and it can possibly get you into trouble so make sure you know the person you're pranking.
For this practical joke you'll need an old book, a small container and fake blood but you can use anything other liquid you want.
The purpose of this prank is to get your victim to spill the contents in the book on their desks or themselves. Check out the video for further instructions.