Fun, probably not fact, but at least rumour: the general Slavic term for Germans, nemez/niemec is related to the term for a mute person (that part is true, look

Fun, probably not fact, but at least rumour: the general Slavic term for Germans, nemez/niemec is related to the term for a mute person (that part is true, look it up), and that's because the Slavic tribes assumed that what the Germanic tribes they had interactions with were speaking wasn't an actual language, or at least unintelligible.