Top Definition
a woman who snaps and bitches over everything. she also gets really mad at small things.

she doesn't have to be named Jane though. it's only used because it rhymes.

then the next day they're all happy again.
worker: Here, miss (authority / boss name) here is your coffee.

boss aka insane jane: WHAT THE HELL I ASKED FOR DECAF EFFING IDIOT
by lolarocksyo August 26, 2009
5 Words related to Insane Jane

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