** BREAKING **: German parliament has passed a law to gradually phase out cases till 2035. Adjective endings will be optional from June 1st until they'll be fully removed by 2026. Read more here ->
("jemandem+Dat zu schaffen machen" - usually used for tasks or circumstance or problems that give someone a hard time.)
2.
to tamper with, to meddle with
("sich+Dat zu schaffen machen an+Dat." - usually in the context of someone meddling with a device or something, often in a context where they're not supposed to do it. Think of someone meddling with a bike lock that is not theirs.)