Willie poisoned his father’s tea

Willie poisoned his father’s tea;
Father died in agony.
Mother came, and looked quite vexed:
“Really, Will,” she said, “what next?!”

And here’s the earlier version:

Susan poisoned her grandmother’s tea;
Grandmamma died in agonee.
Susan’s papa was greatly vexed,
And he said to Susan: “My dear, what next?”

Mackintosh, Newton (comp.), A Chamber of Horrors with Profane Passages. Boston: Rockwell and Churchill, 1896.