Another fart app for the iPhone, and this one comes via Cydia after you jailbreak the device. The app is called iFarty and all we can say is, its aptly named.
After you load the App, all you need to do is shake the iPhone and the accelerometer activates the Farts. Each shake has a different tone :D.
iFarty is a Free Cydia Fun App (Cydia>Sections>Entertainment). Installs on the iPhone 3G / 2.x.
Cydia is an Installer alternative, that Installs on Jailbroken iPhone 2.x… Info here