Illness in which one finds themself being in constant need of a siesta. Other symptoms include patient repeatedly saying "so tired, so sleepy..." as well as foul body odour.
John contracted Mexicanitis while on vacation to Puerto Vallarta. He missed his flight home.
by Michael Wikstrom May 10, 2006
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A Mexican person born in Mexico who now lives in America. Not Mexican American
Maria was married to a Mexican Mexican who had another wife and family in Mexico.
by ms42O February 20, 2015
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A person of nationality of the country of Mexico.

Contrary to popular misconception, "Mexican" is not a racial or ethnic group. Though the majority of Mexicans are Amerindians (pure-bloods and mixed-bloods "mestizos"), there are a substantial number of non-Indian Mexicans, such as the Spanish whites that are effectively the ruling class of the country, blacks, Jews, Arabs (Salma Hayek, telecom magnate Carlos Slim), etc.

A "Mexican-American" is a Mexican national in the U.S. Though the U.S. born children of Mexican immigrants usually claim to be "Mexican," this makes no more sense than U.S. born children of Canadian immigrants claiming to be Canadian.
Idiot: Uhm, Vicente Fox ain't brown; how's he former president of Mexico?

Mexican: /facepalm
by Agnapostate February 23, 2010
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A person born in or has heritage in Mexico. It is not a race, it is a nationality. Like people from the U.S., they can have a variety of looks (i.e. blonde haired and blue eyed, dark haired and light eyed etc.) Not all Mexicans are dark skinned, dark haired and dark eyed. Like people from the U.S., Mexicans can have descent from the native people (i.e. Aztecs) and/or Europeans.
Person 1: Hey look at that American guy!

Person 2: What if he is Mexican?

Person 1: No he can't be! He's got blonde hair and blue eyes!

Person 2: Dude, Mexicans have all kinds of looks. Don't be ignorant.
by nonignorantperson October 27, 2010
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Probably the only term that is used to classify all hispanics living in america by dumbasses.
Brian: Wow check out that hot Mexican babe Johnny!

Johnny: Um, shes not from Mexico. Shes from Puerto Rico.
by Clm850 March 27, 2008
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To modify an older Honda Civic to fit it into the racing category although not specialized to race; to amplify a lemon's look to look like it's an ideal racing care when it isn't. Put differently, ruining a car's image.

A second definition is a generalized cheap look or value to a specific object or abstract entity.
Hey Timmy, why is your piece of shit mexicanized Civic so shiny?

Another example: Man that car insurance advertisement looks suspicious.
by Mr. Zeith April 28, 2015
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The "Mexicanat­ion" is the shifting of Wealth of a Country like America, from BOTH the Middle Class and the once almost Rich to just the Ultra Wealthy; who will then control every facet of America's Government thanks to the SCOTUS's decision that makes it OK for them to donate to political campaigns!
Now that the Mexicanation of America has started, many folks have lost a major portion of their life's savings because of the multiple stock market crashes. Folks that used to live in their own home and have a very comfortable lifestyle are now living in a rental if they are lucky or in their car if they are not, because they have lost most of their wealth and their jobs!
by CaptD August 07, 2011
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