It depends on who is asking, who is being asked, and why the question is being asked. The only questions I can think of that are stupid in themselves are those where the question itself makes no logical sense, and a satisfactory answer cannot be given – for example, ‘If a centaur ate a page of War and Peace, would it grow antlers?’
@Hypocrisy_Central Those questions aren’t stupid at all, if asked by a young child. Questions are stupid or otherwise based on context – I don’t think you can simply state that a particular question is stupid in isolation from its context.
@AstroChuck I should know this by now, but what is the ‘frizzer’?