Basically someone that you think is stupid.
This is how it is interpreted in So.Cal. for the most part.
There you go you fuckin' mooks.
Opposite of Mooks are Midriffs; oxymoronic innocent skanks who are modeled after Britney Spears.
2) It's fun to beat down a ton of mooks before facing the "boss" monster.
"We won't pay because this guy is a... mook."
"But I didn't say nothin."
"We don't pay mooks!"
"A mook. I'm a mook... What's a mook?
"You can't call me a mook!"
A fight then ensues.