Answer:
Two birds, trying to balance in one twig.
How many teenagers does it take to empty the trash, take it out, and put in a new garbage bag?
It is the most common hour to have a gunfight in a western scene.
All about the house, with his lady he dances, yet he always works, and never romances.
Arnold Schwarzenegger has a big one, Michael J Fox has a small one, Madonna doesn't have one, The pope has one but he never uses it, Bill Clinton has one and he uses it all the time! What is it?
What is always coming but never arrives?