Soliloquy of a Nut

I’m ready to be sassy. I’m tired of being dull.
This toothsome nut within the shell is set to leave her hull.
My shape is callipygian. I’m hippest of them all,
and when I’ve reached maturity, you’re sure to see me fall.

When the air turns algid and its cold air cuts,
you might want to console yourself with some roasted nuts.
When you need to feed your hunger, come crack me from my shell,
for to satisfy your appetite’s exactly why I fell.

Prompts today are ready, sassy, callipygian, algid and feed.