Or, "Ready for departure." followed by at least a minutes worth of; full and free movement of controls, illumination of landing/taxy lights exercise of throttles /pitch levers and finally off we go.
It's in our line up checklist, so we gotta do it. Also some of the damn things overheat if we turn 'em on early, before we line up. Alternatively I can't tell you I am ready until after you have cleared me to line up, so I am stuck between a rock and a hard place.