Prank call your friends!
Your friends will think that they are receiving a real phone call. But when they hold the phone to their ears, they will be shamelessly mocked instead -- you choose how by selecting from a wide variety of sounds. :)
Type in a fake caller name or number (or choose from a list of suggestions). Choose a sound, ranging from several screams and laughs to the obligatory fart and burp sounds. Then arm the app and innocently hand the phone over to a friend: "Hey Dave, Julia wants to talk to you." Now conceal your smirk and watch their expression as they "accept" the realistic looking call.
Disclaimer: We assume no responsibility for dropped or broken phones that result from the use of this application.