Its a general saying that is used to greet/say goodbye to people that live in a different time zone than you.

Its said all together to reach everyone and not just one person

Typically used in online conversations&mass text

pronounced :Good-Morn-afternoon-ight
Jane Seymour:i wanna tweet/text everyone goodmorning but i know were all in different time zones....hmm.."

Helen Mirren:"Try gd'mornafternoonight"

Jane Seymour:Genious! That way its a greeting to everyone besides hi or bye....its both!"

Helen Mirren:"Right"
by Gimmeursnaaacks September 23, 2010
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