The tradition was codified in 2010, but New Orleans Saints fans have been crying out "Who Dat?" since long before then.
According to the Times-Picayune, the "Who Dat?" rallying call first originated during the fall of 1983, when WVUE-TV sports anchor Ken Berthelot and photographer Avis Landry were sent to capture video of a high school football game in St. Augustine. The city's Purple Knights had a pre-practice chant that went, "Who dat? Who dat? Who dat talk about beatin' St. Aug?" WVUE sports director Ron Swoboda loved the cheer and aired it on television on Sept.