ask a stupid question and you'll get a stupid answer
Also, . Your query doesn't deserve a proper answer, as in Am I hungry? ask a stupid question! One authority believes this idiom is a variant of ask me no questions and I'll tell you no fibs, which appeared in Oliver Goldsmith's play She Stoops to Conquer (1773) and was frequently repeated thereafter. [Early 1800s]
Dictionary.com presents 366 FAQs, incorporating some of the frequently asked questions from the past with newer queries.