Ég er Reykvíkingur í húð og hár, enda hef ég búið í Reykjavík allt mitt líf.
It's only natural that I'm a Reykjavíker through and through as I've lived there all my life.
Usage notes
This adverb is almost always used after demonyms, such as Íslendingur(“Icelander”); after a profession (for example fisherman) or a hobby (like Liverpool fan).
Etymology
From í(“in”) + húð(“skin”) + og(“and”) + hár(“hair”).