Time Bomb Prank

 This is very popular and best app in google Playstore
Time bomb screen break app gives wonderful feeling to pranksters.
Warning: It will not bomb actually and not crack your screen. This is a prank app.

Just install bomber app and how it blast and break screen of your mobile in front of everyone after some count down.

Source; https://play.google.com/store/apps/details?id=com.asimapps.timebombprank