I don't care at all. It doesn't concern me. (see also)
SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh. (image source) Compare:
Es art mikh vi der farayoriker shney. | .עס אַרט מיך ווי דער פֿאַראַיאָריקער שניי
It bothers me like last year's snow.
SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh