off one's onion

prep_phrase

off one's onion

prep_phrase

1

Slang Crazy; insane.

"'E's a very clever man, the master - so clever that 'e's clean balmy sometimes. I've seen 'im right off 'is onion, and no error."1913, Arthur Conan Doyle, “(please specify the page)”, in The Poison Belt […], London; New York, N.Y.: Hodder and Stoughton, →OCLC:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.