This is going to sound like a bunch of hot air, but it’s not. Air-O-Matic, Inc., the company behind the “Pull My Finger” iPhone app, threatened legal action against InfoMedia, the company blasting out iFart Mobile, for trademark infringement.

No matter what your mother says, farts will forever be funny. And for Joel Comm, they may forever be profitable now that Apple decided his app wasn’t too crass for the iPhone public. iFart Mobile is currently the number one iPhone/iPod Touch application, pulling in a dollar a pop.