Sebastian Plunkett

Sebastian Plunkett liable to flunk it
Poisoned his aunt with a Cloudberry Junkett
She didn't get better so she wrote him a letter
Said you'll have to look after my rabied Red-Setter
It weed on his sofa, it tore up his chairs
Left slobbery dribbles all over the stairs
It ate his canary, it chewed off his ears
He hid in the toilet for seventeen years