in a tick
(VERY) SOON, in a second, in a minute, in a moment, in a trice, in a flash, shortly, any second, any minute, in no time (at all), momentarily, in a sec, in a jiffy, in two shakes (of a lamb's tail), before you can say Jack Robinson, in two ticks, in a mo, in a snap, directly

[TahlilGaran] Dictionary of Contemporary English ▲