Spoof Call or Caller ID spoofing
is a service that allows a caller to masquerade as someone else by changing the caller ID that appears on the receiver’s caller ID display. It can be used to make prank phone calls to your friends by making a fake caller ID appear on their phone screen. It lets you make a call appear to come from any phone number the you wish.
However, spoofing caller id can also be used for bad motives and this is considered to be illegal. But as long as it does not involve any abusive or criminal intent, its legal. You can make a phone prank as long its only intended for fun. It can be used to fool around your friends and family and give them scare or surprise by making your own unique pranks. It sure is an enjoyable experience but just remember not to take it too far and hurt someones feelings