Pinkie Pinkerton lived in a pink one story house on Pink Street. The walls were pink, the roof was pink, the carpet was pink, the flowers were pink, the pictures were pink, the furniture was pink, the bathroom was pink, her stuff was pink, the yard was pink, even her cat was pink. EVERYTHING was pink. So what colour were the stairs in Pinkie Pinkerton's house?
There are no stairs in a one story house.
You can feel it, but you can't touch it. You can hear it, but you can't see it. What is it?