The German phrases (Ameisenlaufen, pelzige Haut) seem odd. As a native German I've never heard of them and there's a grammatical error in the second one (it's cited as "pelziges Haut", the grammatical gender of the adjective and noun don't match up: Haut is feminine but pelziges indicates neuter). He doesn't seem to be a native speaker so I'd take that claim with a grain of salt.