Answer:
Two year-old children who throw tantrums get this nickname. So did the tsar "Ivan."
How can a pants pocket be empty and still have something in it?
When this is found in a road you are forced to make a decision.
If you blow past your destination, you'll have to throw your car into this.
What comes down but never back goes up?
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.