Written as a mock official report, this short poem pokes fun at a man called Captain Cock. The speaker describes him as "an able man," but quickly undercuts the compliment: his gifts are "little," and what he does have amounts to "all talk." The final twist is that he is still afraid of the holster, the place where a weapon, and the authority it stands for, is kept.
The name itself is a joke, and the poem seems to be mocking swagger and false bravado. Judging by the title, the speaker borrows the dry tone of a police document, which makes the insult feel even sharper. The speaker sounds amused and a little contemptuous, like someone who has seen plenty of blustering authority figures before. The holster is also easy to read as a sexual hint, which adds to the teasing. The mood is sly, deadpan, and quick, and it ends on a small, pointed jab at a man who talks big but shrinks from the thing his job supposedly requires.