barmy on the crumpet

barmy on the crumpet

Eccentric or weird. In this phrase, a "crumpet" (a muffinlike pastry) is synonymous with one's head, and "barmy" means "yeasty." What do you think of John's strange behavior lately? I'm starting to wonder if he's a bit barmy on the crumpet.
See also: crumpet, on
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
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