before one can say Jack Robinson

Though we'll be home before you can say Jack Robinson.

If that chain gives way, you'll be on the floor with a broken head before you can say Jack Robinson."

If she is not watched like a hawk she will be in trouble of some sort before you can say Jack Robinson.'

"Pass it I say and then before you can say Jack Robinson, there'll be the sheriff.

'The police will be out here then, before you can say Jack Robinson,' shouted Rooky.

"My word, if the Squire's son sees you he'll make you an offer of marriage before you can say Jack Robinson."

"And before you can say Jack Robinson," added Mrs. Harlow, 'it's another kettle of fish. "

He may break his promise to you, but if you try breaking one to him he will be complaining "It's not fair" before you can say Jack Robinson.

The normal usage is, "(something is done) faster than you can say Jack Robinson" or otherwise "before you can say Jack Robinson."

But before you can say Jack Robinson, she tap-dances her little heart out and nabs a chorus job in a Broadway show starring the great Mona Kent (Christy Morton).

'If you touch that fish I'll have you up the steps before you can say Jack Robinson,' hissed Herbie, going blue in the face 'Whaddya mean,'argued Lofty, 'I found im and I gotta licence.'