Seis de Mayo 

The day after Cinco de Mayo; usually characterized by deadly farts, a killer hangover, and dormir mucho.

I love Cinco de Mayo- Taco Bell, Corona and lime, sombreros, and jammin' to mariachi songs!
I HATE Seis de Mayo- farts that smell like chalupas and a hangover the size of Mexico. It sucks big cojones.

Seis de Mayo by moroho May 6, 2010

Seis de Mayo 

the 6th of May - a special holiday, devoted to nursing hangovers and otherwise dealing with the consequences of Cinco de Mayo

Tom: "Hey Dave, why didn't you show up for work yesterday?"
Dave: "It was May 6th, remember?"
Tom: "Duuude, you were so wasted on Cinco de Mayo- you downed like a full bottle of tequila! That must've been a killer hangover!"
Dave: "That's what why we have Seis de Mayo and aspirin."

Seis de Mayo by dbierman May 7, 2010

Seis de Mayo 

Hipsters' version of Cinco de Mayo, becuase if hey celibrated that, it would be too "mainstream."

Elliot: Happy Cinco de Mayo!
James: Come on, you're killin' my buzz, wait 'till tomarrow.
Elliot: What's tomarrow?
James: Seis de Mayo, cause Cinco de Mayo's too mainstream.
Elliot: oh..cool?...
James: No.. chill.

Seis de Mayo by sexypeacockfromhell October 20, 2012