Mexicunt

Mexicunt is a derogatory term to express disbelief in the race of mexicana. In 2003, the word was featured on UrbanDictionary.

Background
The Word Mexicunnit was used as a gang epithet the 1980s, popular amongst blacks. By 1999, it had died out completely. Mexicunt was probably coined in the 1970s by whites, but has its internet origin on Usenet.

Mexirunt
mexirunt is used by brits. It has its origin in a Youtube comment thread around 2010, about a video concerning LA riots. On Reddit, mexirunt has been used pretty excessively in UK threads.

Used in a sentence
(c. March 2012) Youtube comment section – Video about New York hip hop (April 2006) Gang related forum thread – Black gangs in LA (November 2004) Unknown topic forum thread – [google archives] (c. 1999) Usenet forum – google groups
 * Fuck those ugly hairy mexicunt s wty barebacks and wetcans in their grommy hands. 
 * Clap nuttin on those mexicuntz. We in dis bitch. Get em! 
 * Yeah it was pretty crazy. I got to meet some ugly mexicunts on the way there, but it didnt have effect on me. 
 * PRRRRRRL. Thats what chimps sound like. And mexicunts of course. Anyway, don’t shit on me.