Turdiform

(Poetry Scales 48)   

It’s not what you think
Precisely defined
It means having the
Form of a lark

Not the form of a
Turd, cow patty, or
Link, no sausage, nor
Fresh caprolite

But a lark is a
Bird, more precisely:
A "brownish, streaky,
Ground dwelling bird"

So since we're funnin
And potty humor
Being what it is
We should concede