That which is emitted by an act of geeking out.
That which in a just world would precede a boot to the head.
ex. ". . . for from the multitude there came a great outgeeking, and the LORD tried to change the subject to something fun".
The act of being geekier than somebody else, by analogy with "outrun" etc.: "Dammit, that bastard knows what a directed acyclic graph1 is! He's outgeeking me!"
The act of emanating geekiness, by analogy with "outgassing".
1 The author is kinda vague about what a directed acyclic graph is, and has a philosophical attitude about being outgeeked.