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.

Common Names:

Name	Pronounced	Usage
Tafadzwa	-	Southern African, Shona
Agassiz	['ægəsi]
Fadi	-	Arabic
Sibyl	['sibil]
Nowell	-	English (Rare)
Hankin	-	Medieval English