skara eld að sinni köku
Definition from Wiktionary, the free dictionary
From skara (“poke fire”) + eld, the accusative of eldur (“fire”) + að (“to”) + sinni the dative singular of sinn (“one's own”) + köku, the dative of kaka (“cake”). Literally meaning "to poke fire to one's own cake".
- (to look out for number one): ota sínum tota