A word used to describe anyone that is much more worse than a "dick"; they are a complete asshole.
That dikk is such an asshole.
A typoed version of "dick" to represent a way black people overly exert the term while conversing. It also shows their illiteracy.
Houstus T Huxtable: "fuk dem po-po muddafuckas dey kan SUK MUH DIKK!"