horse of a different color

Cultural  

1. A different matter entirely: “You might be able to convince Devin's father, but as for his mother, that's a horse of a different color.”

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Example Sentences

“I’m a horse of a different color,” he says.

From Los Angeles Times

But a first grader is a horse of a different color.

From Slate

“Black Beauty” is a horse of a different color in a contemporary update of Anna Sewell’s equine-centric 19th century novel.

From Los Angeles Times

And if what you are really after is having more children, that is a horse of a different color.

From Slate

Being pulled in a green cart by a horse of a different color Horse-drawn carriages are an excellent old form of transportation, though this appears to be a slower way of traversing Oz than flying, being carried by a tornado, or a hot air balloon.

From The Verge