The method is cool and is something you might not have expected... that being said you cant just ask
for the phone and say check this out and just break into it. There is a little story telling you
have to do which is not a bad thing just a little acting. and then there is a phase two to the trick
which is guessing the phone number... although you probably can't do that to friends and family,
random spectators will freak! If you want to have a trick at all times this is it, as there is
nothing to carry and no set up beforehand.