Procrustean.

It's Very Annoying
that fitted sheets
are either too big
or too small for my bed
which admittedly has
a couple of (surely-not cloying ?)
blankets on top of
the futon-mattress.
But I've cheered up since
looking for a rhyme
and discovering that a
round-bottomed flask
with a long neck is not called
a swan (living and shuddering,
dying or dead)
but a matrass.