Verb: to crash or break something with a noise, crash, gurgling or mechanical sound, or thud. To wreck or junk something, perhaps an old automobile called a 'clunker'. To hit someone or something, producing a thud sound.
STP kunked-out my engine.
That boy tried to grab my pepper-grinder, so I kunked him over the head with it.
A person with lack of intelligence, a lack of education, a person who steals memes, a person who has an interest in a flat booty from a male gender with tiny genitals and someone who spend money on wellfare instead of child support.