I did this for a bunch of drunk people at this party. everybody was so impressed but its so easy. no, its no david blain kinda shit, just a simple little trick. unfortunatly i dont have a phone book anymore 
but it doesnt even take strength. give it a try, i bet you can do it
YouTube - Rip a phonebook in half
but it doesnt even take strength. give it a try, i bet you can do it
YouTube - Rip a phonebook in half