Supercalifragilisticexpialidocious! (I appreciate that I am in the minority - vocally, at least!)
Well Dyck the Dyke was right in one way; you'd better use it carefully.
TGBFO - but if you can't work it out, you'll have to ask me for my 5 word response.......
... Can work out maybe FO (not Foriegn Office) and GB. T = The?