Yiddish: May God help you like cupping helps a corpse.

SOURCE: Stutchkoff, Der Oytser fun der Yidisher Shprakh.  Cupping is a traditional healing practice in which cups are used to create suction on the skin in order to mobilize the flow of blood or stagnant energy. Whether one believes in its efficacy or not, it clearly can't help a dead person.  (see also)

‎גאָט זאָל דיר העלפֿן ווי אַ טויטן באַנקעס.

Got zol dir helfn vi a toytn bankes.

May God help you like cupping helps a corpse.