(for purpose of this poem
pronounce last word uh gain).

The missus uttered
aforementioned phrase
as she pulled a clump of my hair
from out the clogged shower drain
for no rhyme nor reason lemme explain
how so many globs of these strands
linkedin to scalp courtesy hair follicle,
which hair follicle essentially
a tube-like structure (pore)
that surrounds the root
and strand of a hair.

Hair follicles exist
in the top two layers of skin.

The average individual
born with over five million hair follicles
in their body and over
one million hair follicles
on his/her head, and as I aged
about that many seem to
get loosed when washing then rinsing hair,
nevertheless more hair continues
to grow out of hair follicles
smaller in size than sand grain.

I surmise that if laid end to end
each hapless hair that got plucked
out me noggin since birth
would fill many a railroad car,
(extending from Schwenksville,
Pennsylvania to Ukraine)
railcar (American and Canadian English),
railway wagon, railway carriage,
railway truck, railwagon, rail carriage
or railtruck (British English and UIC),
also called a train car, train wagon,
train carriage or train truck;
a vehicle used for the carrying
of cargo or passengers on a rail transport.

Said locomotive boxcars full to the brim
with globs of hair (mine)
after lathering locks
(each filament evincing
fifty shades of gray fibrous)
composed of 95% keratin,
a fibrous and helical protein
(in the shape of a helix),
which also comprises
composition of the skin
and of all the phanera (hair, nails, etc.).

Synthesized by keratinocytes,
keratin insoluble in water,
thus ensuring waterproofing
and protection for hair.