be water off a duck's back

be (like) water off a duck's back

if criticism is water off a duck's back to someone, it has no effect on them at all (often + to ) He's always being told he's lazy and incompetent, but it's just water off a duck's back to him.

Common Names:

Name	Pronounced	Usage
Timotha	TIM-ə-thə	English (Rare)
BĚLa	-	Czech
Clover	KLO-vər	English (Rare)
Tendai	-	Southern African, Shona
Katriona	kə-TREE-nə, kat-ree-O-nə	English (Rare)
Solomon	SAHL-ə-mən (English)	Biblical, English, Jewish