in the twinkle of an eye

in the twinkle of an eye

Immediately; very quickly; at once. (A variant of the more common "in the twinkling of an eye.") Just call us on this number if you have any problems, and we'll be back in the twinkle of an eye. Don't worry, boss, I'll have this report typed up in the twinkle of an eye!See also: eye, of, twinkle