Derrick’s gecko really was eaten by his snake. I made up the part about the cat.
DERRICK’S GECKO
I had a gecko
And got a snake.
The snake,
“Oh Yucko!”,
Ate the gecko!
What a Snake mistake!
But wait!
I got a cat.
Imagine that!
The snake then had
A cat attack,
And ate the cat;
Which probably inside,
Ate the gecko.
Oh Yucko!