cul-de-sach

cul-de-sac
noun
[Origin: 1730–40; <>bottom of the sack
cul, bottom (from Old French, from Latin cūlus; see culet) + de, of (from Old French, from Latin dē; see de-) + sac, sack (from Old French, from Latin saccus; see sack1)]

1. a street, lane, etc., closed at one end; blind alley; dead-end street.
2. any situation in which further progress is impossible.
3. the hemming in of a military force on all sides except behind.
4. Anatomy. a saclike cavity, tube, or the like, open only at one end, as the cecum.

cul-de-sach is my exixtential dead-end street. the impasse i find myself in, from which further progress is, well, almost impossible.

sach is a four-letter word, pruned from my first name. it means 'truth' in many languages. it is also the agnomen many of my friends have given me, knowing quite well my predilection towards fibs and prevarications and relish for four-letter words of a different kind.

in short, cul-de-sach is 'bottom of the truth'; sachin in/from his depths, or, in a more etymological sense, my ass ...