Something that does not give results that you would expect.

Pumice is a rock that is created by volcanoes. It is very porous and filled with air pockets, so it floats in water.

Now...rocks normally sink in water. The fact that this rock floats is <counter intuitive> to the normal idea that rocks sink.

A red sky at sunrise or sunset is counter intuitive to the idea that the sky is blue.

"Charley is a gentle giant, which is counter intuitive because he looks like a serial killer!"

If you do something that is counter-intuitive, you are doing something that seems like it is the opposite of what common sense would tell you to do.

It was counter-intuitive for me to jump off the bridge, but I did it anyway.

That would be counter intuitive, buy a laptop with a fast processor in the first place.

4999 10,000. This may seem counter-intuitive to some. Go to 'Discuss Question' for the rationale behind this answer.