It’s irritating to realise that there is no such thing as a stupid question.
(Mostly because I hate people that say that – as we all do)
Because there actually isn’t any such thing as a stupid question. It isn’t a question at all that a person is asking; its actually a request for the elimination of doubt.
If you simply said: I have a doubt and I want to completely eliminate it, so can you confirm (blah)…
This would have the same effect without the cliche.
Then hey presto, bobs your uncle, problem solved.