The act of throwing out random geek knowledge just because everyone else in the room is being quiet.
Guy 1: So I read this book about C++
Guy 2: You're pulling a Fergi again
Used for when you do not want to give away the name of your boyfriend but you want to designate that it is a person and not just a BOB.
Girl 1: BOB gave me a run for my money last night.
Girl 2: I don't need BOB as often anymore because I now have a Steve. BOB is only needed when Steve is out of town.