And never, NEVER use the word "Fully" fer chrissakes. It is so very very gash. Quite apart from being a tautology.
At LHR it was quite normal for the clearance delivery frequency to say, after receiving a correct clearance readback, "Call fully ready on xyz.ab".
In places like Palma, being told to call 'fully ready' was the normal, as so many operators would call, 'ready' knowing it would take a while to get their clearance, but with steps still at the aircraft and passengers boarding.
However much one may not like the word, 'fully' it didn't creep in without good reason.