I came accross this final verse. I think it fits very well.

When my Grandpa passed away,
So distressed was Aunty May,
Even so, she began to scheme and plam
First she poisoned Uncle Jack
Built a bonfire round the back
And scattered all his ashes on the land
In a fit of mindless rage,
she approached the ferret's cage
Only one thing she she could do would do the trick
Though the ferret squirmed around
Aunt May pinned it to the ground
And bashed it's ruddy head in with a brick!

Credit where it's due, on the print out I have it says
"Last verse written in 1989 by Vince Venus alias Gary"