I can't believe how this site works - enter the number you want to phone and the number you want to appear on call display. Type the message you want sent, choose a voice and submit. It calls the message through to the recipient. I played with it on some friends - Serious Fun & Trouble!! Short words seem to work the best - very realistic!

Source: http://www.phonetrick.com

There's a victory, and defeat; the first and best of victories, the lowest and worst of defeats which each man gains or sustains at the hands not of another, but of himself.
Quotation of Plato