shit-skin, n. — Green’s Dictionary of Slang

shit-skin n.

[shit n. (1a) + SE skin, i.e. a derog. ref. to colour]

a derog. term for a black person.

1993–2003		Urban Dict. 🌐 Shitskin darkie, nigger, coon, sponge head, kaffer, wog, fuzzywuzzy, black bastard.
1994		I. Welsh ‘Stoke Newington Blues’ in Acid House 38: One more fucking shit-skin gets banged up, wot’s he to you, eh?
2001		D. Looser Boobslang [U. Canterbury D.Phil. thesis] 165/1: shit skin n. 1 a person with dark skin 2 a Maori skinhead.