noun. Some kind of Beavis and Butthead-ish idiocy or flatulence.
Real citation: "May the glory of communication and discussion flourish rather than flaming, trolling, bashing, and general fart-knockery for lack of a less appropraite term that isn't offensive."
(Nick Powers, May 16, 2006, STJ Ultimate, http://vtultimate.org/v-web/portal/cms/ac/index.php?option=com_forum&Itemid=56&amp;amp;page=viewtopic&p=19250&sid=73a9d24da4ec62da8d082480200964f1)
Made-up citation: "New research shows fart-knockery is more common in boys than girls. Preliminary findings also indicate boys have testicles and toy trucks."