Bla B

How is responsibility shown in the poem? I've been looking at this poem for hours and I can't come up with anything, my teacher told me to pay attention to these specific lines: "lifting the stalks to my mouth, the ripest berries fall almost unbidden to my tongue,
as words sometimes do, certain peculiar words
like strengths or squinched" and "black language of blackberry-eating"

That's the only hint I got

Here's the poem:
I love to go out in late September
among fat, overripe, icy, black blackberries
to eat blackberries for breakfast,
the stalks very prickly, a penalty they earn for knowing the black art
of blackberry-making; and as I stand among them lifting the stalks to my mouth, the ripest berries fall almost unbidden to my tongue,
as words sometimes do, certain peculiar words
like strengths or squinched,
many-lettered, one-syllabled lumps,
which I squeeze, squinch open, and splurge well
in the silent, startled, icy, black language
of blackberry-eating in late September.