She worked it out with a pencil.
He works it out with a pencil.
They both only really work on paper
His loving knife.
Their i's don't work
By feeding the poor to the hungry.
Because they don't believe in higher powers.
Works it out with a pencil.
Because they always work problems out with a pencil.
The same way he solved all other problems: He worked it out with a pencil and paper.
He worked it out with a pencil.