Answer:
I go up and down at the same time. Up towards to sky and down towards the ground. What am I?
What do you get when you cross a cow with a trampoline?
I sit in a corner while travelling around the world.
What loses its head in the morning but gets it back at night?
I am there when you sit, but gone when you stand. What am I?
When is it bad luck to see a black cat?