year v [Calque of PaGer sich jaehre to have one’s birthday anniversary]

In phr year oneself: To reach a birthday.

1964 Ferhoodled Engl. [16] [PaGer], Lena is yearing herself on Tuesday so it gifs a nice big birthday cake. 1988 DARE File, [An] old friend of Mom’s came in the drugstore where she worked one day and calmly announced that he had “yeared himself again today”—by which he meant that it was his birthday.