I've only heard of Duck Duck Jeep in the past few months. Recently someone asked me if I've ever been "ducked". I did the "Whatchoo talkin' bout Willis ?". Being I was all about Jeeps, they thought I'd know about the tradition. Never heard of it.
Checked online. It started in 2020. Hardly a "tradition", more of a fad. The Jeep Wave ? Tradition, I was doing it in the 70's.