Fromshit(“feces”) +‎skin.

• Audio(General Australian):

  (file)

shitskin (pluralshitskins)

1. (slang,vulgar,ethnicslur,derogatory,offensive, chieflyUS) A person withdark-coloredskin.
   • 2001, Richard Price,Clockers:

     […] a job that dealt with an endless parade ofshitskin losers—hunting them down, befriending them in order to get their confessions, then tossing them into County[…]

   • 2001, white aryan resistance, “reparations for shitskins”, inalt.politics.nationalism.black (Usenet):

     Youshitskins are thinking you can victimize yourself to the point where the wiggers and liberals will just turn all the wealth over to you.

• cumskin
• shitskinned