I've tried to translate that into my rudimentary Dutch (which I'm a lot better at understanding than speaking) and.. I just can't figure out why it's insulting?

Except if it's a play on dark  people multiplying faster than white people - in which case it would be insulting in any language...

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
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