Green’s Dictionary of Slang

(US black) a derog. term for a black person who may be black racially, but whose opinions, attitudes, lifestyle and goals are all taken from white society; also attrib.

2005		Urban Dict. 🌐 choc ice. A black person who acts like a white person. yo, check that nigga right there, mutha fuckas a choc ice.
2008		D.J. Khaled et al. www.worldstarhiphop.com [film clip] 🌐 fuck hiram clarke from texas he a choc-ice snitch pedophile.
2012		Private Eye 27 July-9 Aug. 23/4: Racial insults Explained: Choc-ice. Black person who is white inside.