There are two players and each takes a turn asking a question. The answer must be in the form of question. The first person to not answer with a quesiton loses.

Here's an example of an incorrect answer:

How are you?
I'm fine. How are you?

Here's how it should be played:

How are you?
Why do you ask?
Is something wrong?
Did someone say something?
No.

another example:

Are you hungry?
How about you?
Is there a restaurant near here?
Haven't you been here before?
You lived here, didn't you?
No.

It's easy to cheat by just asking "why?" all the time, so try to keep it fun and changing. A rule to ask a question only once should solve any cheating. Also, answers should be related to the question and on topic.