They first ask you if you have taken anything. Then they use, i forgot what it's called but they take a series of tests and questions, and THEN they use the breath testing device
The theme of this poem is that a respectful distance between neighbours is the recipe for harmonious relationships: 'Good fences make good neighbors'. The theme of this poem is a farmer's pride in the wisdom passed down to him by his father: 'He will not go behind his father's saying'.