Definitions by Mark Sc.

kkneus 

Someone with a cancer nose (Cancer is commonly used in the dutch language as a swear, we are one of those rare countries that use diseases as swears and insults)

Commonly used to mock people, meaning they are stupid.

Jij bent een kkneus (You are a Cancer nose!)
(Can be interpreted as: You are a dipshit!)

kkneus by Mark Sc. June 8, 2009