In Cameroon, it is indeed quite possible to have a whole conversation with questions only. And both speakers perfectly understand each other between using classic questions and rhetorical questions derived from everyday French. And if you doubt it, here is a special selection of famous questions used in conversations made in Cameroon. Rest assured that it is far from being a dialogue of the death.
Question: My brother, it seems in Cameroon, people answer a question with another question?
Answer: Who said that?
Q: So it is true then?
A: So you don’t know? You want to eat your pepper in my mouth?
Q : Dude, let’s forget about it. What about a beer?
A: Do I look like a factory? (meaning: What a great idea!)
Q: At least you won’t refuse that, my brother?
A: Is it milk? Am I crazy? (in other words: I would be an idiot to refuse)
Q : We could go to Olympia Snack Bar?
A: Are you fishing for answers? (meaning, of course)
Q : But dude, you are paying for the taxi, right?!
A : Yes, or? (another way of saying yes)
Q : But my friend, you are going to buy a car right? Or you want to die in taxis?
A: How we go do? (to express powerlessness in a situation)