In Germany itself, the word "Schweinehund" as an insult has probably been out of use since 1900 and now is solely used to refer to one's inner resistance against making an effort, even if it was for one's own good ("innerer Schweinehund").
German person in the audience, highly amused: "LAWLZ! Fail."
You don't frighten us, English pig-dogs! Go and boil your
bottoms, sons of a silly person. I blow my nose at you,
so-called Arthur-king, you and all your silly English kaniggets.
- from Monty Python and The Holy Grail