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3.
Word used to describe someone who so utterly annoying, and queer. Instead of cock, cocko is used to emphasise their 'gayness'
Isaac: Man I am so cool, you WISH you could be like me
Sal: PFFFT whatever, why would I? Your such a loser.. look at your hair you queer!
Isaac: your just jealous man, everyone is
Sal: okay, then your a cocko
by Saleem D April 01, 2007
 
1.
when a man sticks his dick in a taco shell and puts hot sauce on it.
i gave my girl a cocko for dinner last night.
by john kimble September 09, 2003
 
2.
A term used to define the type of tacos when one has been drinking at 4am. Often used when around a tattoo artist named "Rooster."
Malice: "I want hash brows and biscuits."

Server: "We are all out of Biscuits."

Malice: @Rooster "Damn, I knew I should have gotten COCKOS at COCKO cabana"

Rooster: "You said Cocko's!"

Malice: "No I didn't! Just give me the country fried steak!. Fuck that Chicken Fried Shyt!"
by Malice Joyce September 05, 2011