Idiom idiom
he's off his rocker
Meaning
He's crazy
Examples
“He is off his rocker if he thinks he can win.”
“The neighbor says he wants to build a spaceship in his backyard, so everyone thinks he's off his rocker.”
“The investors whispered that the CEO was off his rocker after he proposed selling their most profitable division to fund a project that had no clear market value.”
Origin
disputed origin
disputed origin
Late 19th-century slang; usually explained by the image of someone falling off their rocking chair.
Last updated June 7, 2026