When one is attracted to people with hair colors other than that on one's partner. When ascribed to a large population, it is when people of a particular region or country are attracted to people whose hair color is rarely observed.
"Hans, I am happy that you are enjoying your time in Ireland but many women are growing uncomfortable by your relentless staring. Kelly told me that it is freaking her out."
"I am sorry Patrick but one rarely sees such beautiful red haired women in my native Germany. This is indeed a hair color paradox."
Natural hair color is what your hair color is right now. Doctors have proved that the hair color of most people could change when they grow up, usually during their adolecence period.
She was born with blonde hair, but when she became a teen, her natural hair color is now brown.
when you're holding up your phone and making faces at it, as though you are taking a selfie, but you're really taking a picture of the person across from you or the wall or anything else that seems interesting but you don't want to be caught dead taking a picture of.
This action is often made more convincing by wiggling the eyebrows or opening the mouth, to pretend you're trying to get a Snapchat filter to work.
FRIEND A: "Did you just take a stealthie of me?"
FRIEND B (turning phone around): "no I was just using snapchat's new filter, see?"