Sense Sonnet - Pumper

Hardware Disease

When a cow does swallow a nail,
As oft a cow is apt to do,
If stomach pierced the cow will ail,
Called hardware disease, yes tiz true!
An ounce of prevention is worth
A pound of cure, the saying goes.
Within a year from the cow's birth
In a mouthful of feed enclose
A cow magnet to swallow, so
From then on metal nails and such
Onto the magnet will thus go,
And not bother the cow too much.

The magnet stays and does not pass,
Safely letting the iron amass.