Dud-Dub, if I may indulge in a little post hoc rationalisation (in which I hold a Master's degree!) -

Just as the sagger-maker's bottom knocker assists the master by performing essential subsidiary service during the manufacture of a sagger (or segger, in some parts of the Potteries), so do I assist those on this board who provide the kiln in which others fire their wit.
It is a humble occupation, not to be compared with those of mighty intellect who produce and collate magnificent etymologies and who pierce our pretensions with cunningly sharpened arrows of wit and humour. It is, nevertheless, a useful - possibly essential - function and one that I am proud to provide.