Less gay than saying "hi"
Easier than rolling down the wondow of your car to yell "yo, homie" as you drive down the street. Don't try it with you'r g/f, or no sex for you. See also: nod of acknowledgement
lazy guy: I saw LJ walking down the street when I was driving.
nerd guy: Did you stop and say hi?
lazy guy: Fuck that. I gave him the nod.
lazy guy: *Gives Nod*
girlfriend: *Kicks crotch*