go doolally(redirected from gone doolally)
slang To become insane. The phrase originated as military slang referring to "Deolali," an Indian town where a military sanatorium was located. They'll lock you up if you go doolally on us. I don't know what that guy's blathering about—I think he's gone doolally.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.