I say "OH MY COD" a lot, but a lot of my friends know where its from LOL. They think it's funny and say the same or "WHAT... What IS this?" or even "I have THIS." That's one of my favorites. It's fun when you get your friends into RE, especially when they learn a thing or two about it and come back to you with another quote.
My best friend for some reason likes Excella (I don't know either) and when I do something stupid or fall down she claps her hands and goes "...Bravo..." Makes me laugh every time.