Make them think they've broken your phone with Cracked Phone Screen! Or just show them a cracked screen you broke.
Once app is started you will find a broken glass image on top of your screen.
Again, Cracked Screen is a silly joke app which simulates a broken mobile phone screen. Make a fun out of each of your friends.
How to use:
Start "Cracked Screen" and once you see the cracked image, just hand your phone to one of your friends. That's when they'll notice the "broken screen" on your phone. You can even blame them for breaking your phone, maybe they'll buy you a new one ;)
Don't forget to click the back bottom to be ready to fool your next friend!
As many times as you want!