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1.
A tactic where someone leaves a group of people or a public space immediately after farting. It derives from the tactics of Mongolian Horseback Archery, which involves attacking and then retreating swiftly to avoid retaliation.

Mongolian Fartchery is commonly employed for two reasons:

a) To avoid detection or accusation from others regarding the fart

b) As a spiteful farewell gift for others remaining in the public space
Albus, cut down on the Mongolian Fartchery... everyone knows you're not actually going outside to text anyways.
by Brothelwaffle March 03, 2011