There are no stupid questions in this world.
If there are no stupid questions then what kind of questions do stupid people ask? Do they get smart just in time to ask questions?
I think if there's an answer to every question then there are no stupid questions in the world. Every people have their own sets of questions, which, depending on their 'class', and if in your case, stupid people, maybe you and me and the mass may think of it as a stupid question, but if there's an answer to it, it's just a question like all others, only, a little, doesn't make sense or stuff. I'm not a philosopher so I can't give the perfect answer, but most importantly, even if there are stupid questions, no matter how stupid the question is, most importantly the guys who asked the question learned something.