What is Duka?
1.
To fuck up extremely badly, then deny it no matter how much evidence there is
"Yo did you steal my cake?"
"No"
"Yo, you got icing all over your face man"
"Fuck man, I didn't take your cake"
"..Stop being a Duka"
See
2.
A nickname for human feces
Hey, don't throw that duka on the storage house's roof!