A Mexican. Possibly a combination of Spanish and icky. Dirty Harry Callahan made an interesting comment in one of the GREAT Dirty Harry movies. See example.
New cop of Mexican decent: "Why don't you like me Callahan."
A Detective: - overhearing question - "Harry hates everyone...chinks, niggers, wops...everyone."
New cop of Mexican decent: "What about Mexicans?"
Callahan: - In a dry matter-of-fact voice - "ESPECIALLY spiks."
A word used by racist people who are insecure and depressed bout who they are cause they got not cultural identity so they hate the Mexicans because of their rich history, traditions and strong drive to succeed.
"damn I hate the fukin spiks, they got all the white cheeks"
one of the reasons the United States is incapable of solving its immigration issues is because it is uncomfortable, due to a United Nations obsession with human rights, denying birthright citizenship to the U.S. born children of an illegal alien, especially the children of a spik. IMHO if you punish the children of illegal immigrants, regardless of the ethnic origin of the immigrants themselves, by denying them birthright citizenship, future immigrants to the United States, wherever they hail from, will probably think twice about immigrating illegally.