go see a man about a dog

The phrase "go see a man about a dog" is an idiom commonly used to politely and discreetly excuse oneself from a situation or conversation without providing specific details about the reason. It is often used as a humorous or vague way to indicate a need to leave momentarily to attend to a personal or private matter. The phrase originated in the early 20th century, and the exact origin is uncertain, with various theories suggesting its connection to gambling, horse racing, or even dog breeding. However, in modern usage, it generally serves as a light-hearted and indirect way to express the need to step away.