Wearing a sheitel and not a tichel? Stealth Jewish.
Baseball cap over the yarmulke? Stealth Jewish.
Saying "happy holidays" instead of "Merry Christmas"? Stealth Jewish.
And you frum tourists who visit other cities in long denim skirts and sneakers (women) and sneakers and NY baseball caps (men)? You are not stealth Jews. You fool no one. No one wears black suit pants with sneakers!
Let's share one of our linked friend's images, shall we?
It's beautiful.