Whilst walking down the street
I heard a thunderous tweet;
'Twas a straining little bird
Who couldn't pass a turd.
The little thing was constipated,
Its anus wide dilated;
Tweeting loudly in mid-bog,
Trying to eject a log.
I observed with sympathetic heart
As it trumpeted out a fart;
Straining, chirping loud and long,
Letting off a foul and noisome pong.
I watched for nigh an hour
Its display of anal power;
Then a final intestinal pump
Produced a huge great steaming lump:
A mighty ball of faeces
(a giant of its species,
and total bumhole splitter
which shattered its feathered shitter).