before (one) can blink(redirected from before I can blink)
before (one) can blink
Very quickly or suddenly. I'm not far from your house, so I'll be there before you can blink. Before I could blink, a deer darted out in front of my car, and I had to slam on my brakes.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.