I had to look up the origin to this phrase earlier, because I left it in as a throwaway line on the last draft of Bad Neighbours (in relation to the main character worrying that the origin was racist), and I’m happy to report, it’s not.
It comes from a combination of the Norse and Dutch words for brand new.
Thank goodness.
I hate finding out things I’d taken for granted have terrible background stories (see Gaiman, Neil and the rule of thumb).

Dutch is a fucked up language, is it not?
Target: 1300 words
Written: 910 words, novel: Bad Neighbours
Read: Dragonflight, Anne McCaffrey
Comics: Black Science 22-24, Low 15
Music: Experience, The Prodigy