In a country where past cases have made it quite clear that one may not insult police officers with impunity, this would seem to be a no-brainer. But what is considered an insult is unclear, as this case demonstrates. As reported by DutchNews.nl:
A homeless man has been cleared by the High Court of insulting a police officer by calling him a mierenneuker – literally ant-fucker – a term used in popular speech to describe people who stick obsessively to the rules.
The court said it depended on the context in which it is used whether or not the word should be considered swearing. Only if mierenneuker is used with the intention to insult or cause offence is it a swearword, the NRC quoted the High Court as saying.