Like water off a duck's back

как с гуся вода Например: Flattery fell off him like water from a duck's back. (W. S. Maugham, Complete Short Stories, Neil Macadam) — Лесть не производила на Нейла ни малейшего впечатления. Many people showed him they didn't like what he was doing, but their disapproval passed off him like water off a duck's back. (DAI) — Многие не одобряли его поведения, а ему все как с гуся вода.

Англо-русский фразеологический словарь