A combination of Don and Dada. Meaning the top pimp, the biggest player, and even one step above mack daddy.
"They call me the Don Dada
Pop a collar, drop a dollar if you hear me you can holla
Even rottweilers, follow, the Impala" - Ice Cube, Hello
"Who may not be original but still a don-dada (yeah!)
I'm gon' take this beat and flip it, I'm gon' make it hotter (yeah!)" - Nelly, River don't run
The highest don, meaning the most respected.