A: To make people sound smart, even when they have no idea what they're talking about.
Q: Is Q&A a sport?
A: Yes, but only for masochists and sadists.
Q: How do I become a Q&A master?
A: Practice asking questions, then pretend you already know the answer.
Q: Can I use Q&A to get out of doing chores?
A: Only if you can convincingly ask, "But what's the point of doing chores, anyway?"