(noun) The act of inserting a finger within one of the opening (naris) of one's nose with the apparent intent of removing mucus (otherwise known as picking one's nose) esp. when done in public.
A term derived from an episode of Seinfeld.
, do you see what Jerry is doing in that Taxi cab? He seems to be picking his nose.
Maybe, or he's just scraching his nose since I didn't see any nostril penetration.