Because they always work problems out with a pencil.
To look sharp. Credit: 3rd grade me.
Because they're made out of graphite
Don't be silly, walruses don't make sandwiches; women make sandwiches. Made this up to bug my sister. It worked. Her husband laughed.
A. A woman to show him how to work it.
None of them make the sandwiches.
Because it has too many problems.
One shoots and shoots but can't hit, and the other...
Try or try not, there is no do.
She worked it out with a pencil.
Math teachers, because every student counts.