They say a poor craftsman blames his tools, but Bob was a really good craftsman.
His neighbors were always borrowing his tools and not returning them, and they were always borrowing the good tools, so Bob was stuck with his worn-out bad tools.
One day, he got fed up with everyone not returning his tools, so he made a list and went door to door, smashing in skulls with a hammer and taking back his tools.
By the time the cops came, Bob had all his tools back.
In prison, he worked in the wood shop.
Building really crappy furniture.