Like throwing up a peace sign as greeting but with only your pointer finger; though usually done with both hands. Generally used as a greeting, or form of recognition among friends, and seeing friends in a public setting.
Originated in southern
Minnesota and used mainly in small communities as a sign of
friendship.
Person 1: Oh hey there's Emily
Person 2: Cool sauce up
ones!
I saw Jessica's mom in the grocery
store yesterday, sauced up some
ones.