Skeptics requires questions to be about notable claims. The burden of proof is on the question to provide evidence that the claim is notable.
Must the question also provide evidence that there is a notable doubt about the claim?
This is particularly an issue for questions about cultural phenomena. What's unbelievable to someone from one cultural background might be so normal to someone from another culture that they never even stopped to think about it. Only in the last week I learned that droppings are not commonplace everywhere (not that I'm surprised, but the thought that they aren't simply never crossed my mind). Perhaps someone from a different culture may find this so strange that they are not sure if it's true.
Is this photo showing a woman standing in the nude before teenagers real? — question is currently open.
Hypothetical: Is the sky blue? would likely be closed as off-topic.
Hypothetical: Do Dutch parents really drop their kids in the woods?
Hypothetical: Do American kids really sing to the flag?
What are the defining criteria here?