It'd be cool, we'd get to call ourselves "[snip]" later on when no one gets what we're talking about.
Anyway, here's my own little input:
"I still wanna be a woman" & "What about deathmatch", from this http://img705.imageshack.us/img705/7953/brinkcomicanhonor.png, found in http://www.gamesas.com/index.php?/topic/1187164-are-you-ready-to-use-these-brothers/. May not be too well-known compared to others, but is funny as hell.
"ARE YOU READY TO USE THESE, BROTHAS?!", the question asked by a Resistance guy in one of the trailers. Used to question our excitement to an upcoming event, such as launch day.
Anyway, let's hear some others!
I know there are more, but those are the two that pop in my head immediatly when I think about Brink.