I speak a lil bit German, and can understand it pretty well.
but...I dunno anythin about swerin words in German, nor about "dreck", plus, I don't consider "crap", if "dreck" means "crap" then, as swear word, and I rly didn't noticed that somepony in this episode said "dreck", I swear I heard "drink", so....I don't rly care.