You rub your nose against someone else's nose.

Means to rub lips or nose against somthing or someone Gently

If your nose itches or you feel the need to rub it, it means you'll be upset/fight with someone.

in your nose or mouth. or possibly if you are unlucky your ear


If you rub your eye after you rub your nose it is possible you will get an eye stye

in your nose or mouth. or possibly if you are unlucky your ear


If you rub your eye after you rub your nose it is possible you will get an eye stye