This is hilarious: the world's first fart app with video goes on sale on the iTunes app store for 99c.

Featuring "videos of attractive women passing wind", iFart Video 1.1 introduces a user generated element to the world of iphone farting apps.

The developer, an otherwise sensible Cincinatti, Ohio computer dealer called SellyourMac.com, is asking users to submit their their best fart flicks to be considered for inclusion in future app updates. This feature is called "Submit your toot to pollute". Any "really good farting videos will be considered", they say.

Let's not forget the "community' elements - Twitter, Facebook and email links to enable iFart video watchers to share videos of women "making some pretty rude noises".

Sellyourmac.com is spinning the app as toilet humour. "You are going to laugh your butt off," says an annoying man, who forgot to take his ritalin, in the promo video.

But perhaps a fetish for flatulence is rather more common than many of us realise. In case you were wondering, the medical term is eproctophilia.

Dirty. Very Dirty.