pour water on a duck's back

To do or attempt something futile or useless. I know you dislike Reginald's new companion, but I doubt he'll listen if you lecture him. It would be like pouring water on a duck's back.

See also: back, on, pour, water

Farlex Dictionary of Idioms.

See also:

have (something) against (someone or something)
have against
have something against
not bear the sight of (someone or something)
bring sand to the beach
sour on
sour on (someone or something)
harbor (something) against (someone or something)
harbor (something) toward (someone or something)
harbor against

词组	pour water on a duck's back
释义	pour water on a duck's back pour water on a duck's back To do or attempt something futile or useless. I know you dislike Reginald's new companion, but I doubt he'll listen if you lecture him. It would be like pouring water on a duck's back. See also: back, on, pour, water Farlex Dictionary of Idioms. See also: have (something) against (someone or something) have against have something against not bear the sight of (someone or something) bring sand to the beach sour on sour on (someone or something) harbor (something) against (someone or something) harbor (something) toward (someone or something) harbor against
随便看	goober goober grabber goober-grabber goober grease goober-grease goobrain gooch good it's not the heat, it's the humidity it's not the meat, it's the motion it's not what you know but who you know it's not worth it it's not worth the trouble it's not you, it's me it's no use it's no use crying over spilled milk it's no use (doing something) (it's) no wonder it's now or never it so happens that... it's on (it's) one damn thing after another it's (one's) funeral its/(one's) moments it's one thing after another