Top Definition
An element not yet on the periodic table, Mexicanium is the tough substance that lines the bones of all Mexican boxers.

Similar to Adamantium, this element is four times stronger than titanium, but weighs less than human bone mass.

While most Mexicans have trace elements of this nearly unbreakable material, it is particularly pronounced in Mexican boxers, wrestlers, poets, political leaders and revolutionaries.
Did you see how Antonio Margarito took all those punches to his head and still beat Miguel Cotto? It's because his entire skeleton is laced with Mexicanium.
by E.P. Sato July 31, 2008

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