Answer:
What is black when you buy it, red when you use it, and gray when you throw it away?
A large oasis in the desert. Come with cash and leave with none.
When I point up, it's bright. When I point down, it's dark. What am I?
I am a celebrity fish.
I have a face and two hands, but I have no arms or legs. Six plus seven is one. What am I?
What made Cyclops quit teaching?