Nod of acknowledgement

[Raeanne Dimick]

Something done primarily by males who are in the same demographic.
A simple [nod] that a guy that gives to another guy that acknowledges the fact that they are both aware of each other and accept each others presence. Usually done without any thought going into it, essentially a non-verbal message of acceptance.
I have no idea why we do this now that I think about it, its like some [primal] need to tell each other that we arent hostile. Maybe it has to do with alpha males or something, left over [monkey shit] like arm hair I guess.

[Tariq Zaki]

[The nod] of acknowledgement is a standard [among guys] as a way to let the person know that you see them, without having to resort to using words. Girls will generally not accept [the nod] of acknowledgement and opt for a wave of the hand and/or a smile, perhaps even accompanied by words. The nod of acknowledgement is a wordless conversation.
The only acceptable response to a nod of acknowledgement is another nod. If you speak, you have broken the point of such a gesture.

[Britney]

The all [fabled] [nod] of acknowledgement is an interesting phenomenon. It is, put simply a slight head nod exchanged between males. While its use is documented among females, it is a rare and condition specific phenomenon. While exchanged between friends who, for whatever reason may not want to acknowledge each other verbally, in some places of the world, it is a common greeting among strangers. For example, in the southern United States, it is very common to offer a head nod to another male as you pass each other or get caught glancing at each other. However, as you travel further north, the head nod [disappears] among unfamiliars. While taking [a stroll] in NYC, youd be hard pressed to get any unfamiliar male to return a nod of acknowledgement while simply walking down the street.