Alright, I've found an epic site for pranks internet>phone.
The site is called http://www.prankdial.com/ .
You get three free calls every day.
You can also pay for more tokens to have more tries per day.
There are alot of prank types.
Here is what I did:
http://www.prankdials.com/listen/998084611
Search for numbers on www.whitepages.com .
If I'm not wrong, you can call any number that is from America.
Try this thing on your own, record and post here!