Yeah, I used to use the phone call app where it shows the caller ID as what you set it to be and not (your phone). We'd use it to call someones parents (younger friend) and say we were at so and so's house when we weren't due to how strict they were with having curfew and other rules away from home... I know that sounds terrible and all but it was pretty innocent, and we thought it was pretty cool, must have been about 5 years ago or so. It's been a possibility long before that too I am sure.