Three tiny scenes, all of them about being alone. In the first, the speaker goes out into a field at midday expecting company and finds only a horse. The joke is gentle, but the emptiness is real: a horse is better than nothing, though it can't answer back.
The second scene suggests an awkward conversation that went nowhere. After "foolish talk," the rain takes over, and the word "discourse" makes it sound as if the weather is saying something wiser than the people did. There's a hint of embarrassment, maybe regret, and a relief at being quiet.
The last verse has the speaker staying far from others, sealed inside a truck. The distance seems chosen, but it also feels a little sad, since the truck works like a shell.
The mood is dry, wry, and solitary. The humor keeps the loneliness from becoming heavy, while the plain images of field, rain and truck leave a lingering sense of separation.