The father's idiot son

When
The local idiot
Spread a rumour about excavating
A dinosaur testicle
From the village Ramlila ground

He didn't realise
It would be as much fun
As the time, a sea monster with 97 legs
Crawled onto the beach
Mistook his father's bald head
For a turtle egg
And dragged his father
Into the depths of the ocean