The erstwhile Group Captain at 2 FTS whose surname was the same as the maiden name of the next Queen was universally known as 'Pippa'. Apparently he hated it, which merely ensured its wider promulgation.
You can blame me for that! I christened 'Pippa-the-fat-navigator and ex-co pilot' with that name, because when one thought of the actual and very shapely Pippa (ooh, that dress...), the comment was "What an ar$e!". The same was said of P-t-f-n, but for an entirely different reason!