Double Intrusion Poem by Ima Ryma

A grain of sand gets stuck in me,
Causing me irritation - damn!
And so does respond my body
To give some relief to this clam.
I use some of the same stuff that
Is used in making of my shell.
This stuff flows to where the sand's at,
And coats over the sand real well.
Layer after layer of stuff
Goes 'round the sand and forms a ball.
As the time has gone by enough,
I feel much better after all.

But humans make my life awhirl,
Grabbing that thing they call a pearl.