To outgeek someone is to hog a
conversation by over elaborating on a topic or subject that the receiver is not
interested in nor informed on. When you are in a
conversation with someone and they talk endlessly in depth about the nitty gritty mechanics of their favorite video game that you've never seen nor care about, that is a prime example of outgeeking.
Danny: Hey, why are you so late for lunch?
Anthony: Yeah sorry, I got outgeeked by Jacob on the way he-
Jacob:
And then, if you parry the action command on time, you can
activate his secret fourth phase in which he
blah blah blah blah blah...