Zak kof is an extinct species of a wierd breed of monkey's and turtles.
It is belived that some are still alive but are very rare to find.
their appearance looks like a tiny monkey with a tortoiseshell.
In day to day use you will reffer to some as zav kof as a weird guy who is fat in a jokingly manner.
John: did you just see this guy he was soo weird.
William: yeah what a "zav kof" haha.