It’s been postulated that the fart noise in humans came about as a warning call, used if a member of an early humanoid tribe met a sudden danger.

It’s detailed in the paper; Anal Trumpet Alarm Calls in Pre-Vocal Hominidea. Brunet, Michel; Guy, Pilbeam, Taisso, et al, Nature (Nature Publishing Group) 418 (6894): 145–151.
( Ring Of Fire A petty, drooling belming butthurt retard., Mon 17 Oct 2011, 10:23, 3 replies)

I'm always left with a sense of wonder at the slapstick-comic, pathetic burble-squelch of the fanny fart. From whence it comes?
(roysin, Mon 17 Oct 2011, 10:51, closed)

Ah! Now we’re moving into fluid dynamics

( Ring Of Fire A petty, drooling belming butthurt retard., Mon 17 Oct 2011, 11:42, closed)

I actually looked this up. I'm a terrible nerd.

(universalpsykopath loves what you've done with your hair., Mon 17 Oct 2011, 15:05, closed)

So did I
more in hope that it actually existed. Ah well.
(Petite chien is going to do science to it, Mon 17 Oct 2011, 22:49, closed)

Please, please, please
You HAVE to write this article!
(TDub Nunc id vides, nunc ne vides on, Mon 17 Oct 2011, 18:59, closed)