Guys, usually seen at bars, of college age. Their clothes could be described as prepy hip-hop. An upside-down backwards visor is quite common. Ocho itself is because of the frat-guy way of talking and the fact that they use spanish terms to descibe things they think are cool.
"Dude, I've had like ocho beers tonight, I'm buzzin!"
"Let's get outta here, there's too many ocho beers dudes here!"