informal Very quickly or suddenly.
More example sentences
- A friend of mine in Brixton kept koi carp in a raised toilet and this heron came straight in and ate the fish before you could say Jack Robinson.
- Yet, with a ton of people assigned to wait on customers - eight clerks were politely servicing people - I had my onion bagel with vegetable tofu spread and a juice before one could say Jack Robinson.
- The canoe slides into the water in the blink of an eye and before you can say Jack Robinson it's twenty yards off shore.
Definition of before one can say Jack Robinson in:
- The US English dictionary