Is a highly contagious disease, those who suffer from it will eventually become Mexican. The symptoms include a browning or tanning of the skin, attempts at speaking Spanish, growing a mustache, delusions of being President of Mexico, and/or throwing up at hearing anything that is not Latin music.
Since Keith started dating a Mexican he began suffering from Mexicanism. Because of the disease he attempts to speak Spanish, stands out in the sun for prolonged periods of time, and listens to Latin Music on his Zune.
by LaChicaCelestial May 29, 2009
Top Definition
1. Showing a very Mexican side of you
2. practice of Mexican belief or heritage
3. showing pride of being Mexican
They showed their mexicanism by walking down broadway with the Mexican flag waving up high on Cinco de Mayo
by Rusha! Ahoooa!! July 27, 2008
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