der Scheibenkleister.
Does that mean wall paper paster? I had never heard of this compound.
Here is the context in which I found the word
Da stolperte er über seinen Hund und stieß den Sarg von der Tafel herunter! Schneewittchen rollte aus dem Sarg heraus und auf das Gras.
„Oh nein! Oh verflixt! So ein Scheibenkleister!”, rief der Prinz. From a retelling of the Snow White fairy-tale from the FableCottage
https://www.thefablecottage.com/german/schneewittchenThe dual-language dictionary site Dict.leo.org says it a dated euphemesism for scheiße.
Duden.de gives its meaning as being the second meaning of scheiße, which they give as etwas sehr Schlechtes, Unerfreuliches, Ärgerliches.
Link to the Duden.de entry
https://www.duden.de/rechtschreibung/ScheibenkleisterIt seems to be a polite kid-friendly way of saying oh shit.