“The only stupid question is the question that is never asked.”
“It's the stupid questions that have some of the most surprising and interesting answers. Most people never think to ask the stupid questions.”
“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?”
“There is no such thing as a stupid question. Just stupid people who ask questions.”
“Why would you ask a stupid question like that?”
“Sarcasm is one of the many services I offer to people who ask stupid questions!”