Der gunderhaven drizzleflippen!
(That is what German sounds like to me!)
I knew a German guy who told me that Americans sound like dogs to Germans, then opened his mouth and with a staccato tone did his imitation of what Americans sound like to him: “ARF ARF ARF ARF!”
Hahahah. I about fell out. It reminded me that nearly everyone makes fun of the sound of people whose language they don’t understand!