literally means "to have sex in the kitchen" in dutch. But Dutch people always tell tourists that it means "hello" in dutch. It is a very commonly used expression, Dutch people being great fans of kitchen sex. Probably the second national sport after cycling.
Tourist entering a restaurant in the Netherlands:
"neuken in de keuken, could we have a table for two please"
A "Newkenwilly" is a slang word from the Sacramento Ca area. It is when a man uses a woman for a piece of ass and nothing else. Getting his "willy" wet and moving on to a "new" peice is usually what earns a man this name.
"I drove 45 minutes to take him food and a piece of ass. When he was done I was asked to leave."