The prison inmate.

A prison inmate was assigned to learn carpentry.
He soon became the best carpenter in the prison.
The warden heard about the inmate's work.
So, when it was time to remodel his kitchen, he approached the inmate.
But the inmate refused to fit a countertop for the warden's kitchen.
The inmate said, "I'd love to help, but it was counterfeiting that got me into prison."