Is there any scientific method for measuring the speed of a fart?

Stupid Facts - Fart Facts

Farts are created mostly by E. coli.

On the average a fart is composed of about 59% nitrogen, 21% hydrogen, 9% carbon dioxide, 7% methane, and 4% oxygen. Less than 1% is what makes them stink.

The temperature of a fart at time of creation is 98.6 degrees Fahrenheit.

Farts have been clocked at a speed of 10 feet per second.

A person produces about half a liter of farts a day.

Although they won't admit it, women fart as much as men.

Termites are the largest producers of farts.

Farts are flammable.

The word "fart" comes from the Old English "feortan" (meaning "to break wind").

Excess gas in the intestinal is medically termed "flatulence."

http://mistupid.com/facts/page070.htm


Here's a page about Bowel Physics:

http://www.dedoimedo.com/physics/lift-fart.html

I can't vouch for the validity of either of these sites but hope they help.

Serpa's answer tells us all we want to know about a fart, but does not answer the question about how its speed might be measured.
Wind speed is generally mesured using an anemometer, but this might not be practicable for a fart.
http://gillinstruments.com/products/anemometer/landing/wind-speed-anemometers.html
The classical method of measuring the rate of air flow using a pitot tube and manometer seems the best approach.
http://www.engineeringtoolbox.com/pitot-tubes-d_612.html