[ becky blinks a few times because, well, how does someone not know they're cosplaying? unless... this is one of those alternate universe things... ]

Oh! I'm sorry, I thought you were — cosplay is short for costume play, like, when you dress up as your favorite character from, say, a video game. That's what I thought... you were doing. Your armor looks a lot like the armor in this game called Halo.