Dial out to a fake person. Create a conversation, type a number and dial out as you would normally do using your phone's dialer. But instead of a real person, your phone will answer to you and have a fake conversation with it.

you could also give your phone to a friend, ask him to call to an already activated faked number and have fun.
App Features:

1- type phone number or select from your contacts
2- use voice synthesis to create a fake conversation. use menu to load a sample one. use ? to get help on creating the conversation
3- activate fake out calling. if you change the name or phone number while fake out calling is active then de-activate and activate again.
4- once you activate fake out calling, any calls to the selected number will be faked until you come back to the application and de-activate
5- use your dialer (or whatever other way you make calls) to dial to the fake caller