Up nod

Guys typically use the up nod as a sort of "sup" greeting. It is less formal than the down nod.
Jay gave me an up nod as I walked down the hall. "Sup," I replied.
by smexy_hotdog82 March 10, 2022
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up nod

The act of raising one's chin as an acknowledgement of another person. Significant in that it exposes the throat, long thought a point of vulnerability.
Phil greeted Fred with a wry grin and an up nod in silent greeting. See also jock nod.
by Doctor Psycho September 07, 2014
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