The double nod is a true sign of a dork or loser. As a common casual greeting one gives a nod to the other person. But when one gives two quick nods instead of one, she is branded for life. Throughout my own, and my friends experience this has been proven true. Sometimes it may happen by accident, but if repeated it is solid proof. Try it, it just doesnt look right either. Talk to the people who do it, youll see what I mean. Example: Person 1: Chris gave me the double nod today. Person 2: LOL. Nearby girl: That confirms it. Chris is a dork.
DOUBLE NOD, THE
Meaning of DOUBLE NOD, THE in English
Slang English vocab. Английский сленговый словарь. 2012