A holiday following independence day, which is basically just another excuse to get shitfaced and party.
Note: In Spain, this holiday is known as "July 5th", which sounds foreign and exotic to Spanish people.
Dude, so there I was, drunk off my ass at the Cinco Julyo party, and this girl was sucking my cock in the moon bounce. Then her boyfriend showed up, so I finished on her face and got the fuck out of there. It was almost as good as last years' party.