I am experiencing this very problem right now... I have more expertise and experience than my younger boss right now... We have had several face downs - and I risk getting fired because of his insecurity and fragile ego ...
No you risk being fired for facing down your boss...no matter what his age is or how much you know..he is your boss...his title will outweigh your experience no matter how much you try to show him up. Stand down and you’ll save your means of income.