Para que tengan un Cinco de Mayo más interesante: piñatas en forma de cuerpos desnudos. Link (not worksafe)

Reader comment: Patricio Lopez says,

An interesting factoid about Cinco de Mayo is that it's become a much more important holyday in the US than in Mexico. Most Mexicans don't even acknowledge it, since it's not a free day (we have to go to work and school), and since it commemorates a rather pyrrhic victory: we later lost that war, and were ocupied by the French for almost four years. This Wikipedia article has the full story of how it became the extravaganza it is today. Link