jemandem einen Floh ins Ohr setzen

to put a (far-fetched or unsettling) idea into someone's head

Origin

The expression is documented as early as Grimmelshausen's 'Simplicissimus' (1668) with the same meaning. It conjures the image of a flea hopping around in one's ear, leaving one restless and unable to think clearly.

Source

Building blocks

Words in this expression

Grammar that uses this word

Examples

  • Mit seiner das Auslandsjahr hat er einen gesetzt.

    With his remark about a year abroad he put a flea in my ear.