It's a crippling of an old saying "DUX MEA LUX" who means who means Duce My Light, but wrote in that way means Duce Sucks it to me (the dikK)
DUX MEA LUX!!!
Fanculo Fascista!! Il DUX ME LO SUX!!!
Fuck you fascist!! Duce SUCKS MY DICK!!
A way to describe ori who sux bad
"Man, ori sux bad today"