Who is the genius now?

A proud and confident genius makes a bet with an idiot. The genius says, "Hey idiot, every question I ask you that you don't know the answer, you have to give me $5. And if you ask me a question and I can't answer yours, I will give you $5,000."

The idiot replies, "Okay." The genius then asks, "How many continents are there in the world?" The idiot doesn't know and hands over the $5. The idiot says, "Now my turn, what animal stands with two legs but sleeps with three?"

The genius tries and searches very hard for the answer but gives up and hands over the $5000. The genius says, "Dang it, I lost. By the way, what was the answer to your question?"

The idiot hands over $5.