The wierder thing to me is how many of these terms i pronounce differently based on context.
I'd pronounce "etc" in a conversation with my wife (non-nerd) one way, but with work people or other nerds in the room, i'd pronounce it the other way, and my wife would have no idea what an "et-see" was.
The other interesting set is how to pronounce symbols. Hash/pound is one, but having work discussions that contain "whack whack" or "slash" could probably get you arrested in an airport these days :D
My favorite is "paradigm" though. i learned a lot of my programming in my tiny little WI hick hometown by getting books and reading them in junior high, with nobody to talk to about them. it was probably years before i heard that word used in a conversation and actually linked it to its "pair-a-dig-em" that i had in my head as a kid!