I didn't catch that until probably my 50th time watching the movie. I've seen it well over 300 times by now. I'm 33 and saw it for the first time when I was 4 on a VHS my dad had taped off HBO. It's my favorite movie of all time.Man, it's small but efficient lines like this we just don't hear in movies anymore.
I bet a lot of audiences today wouldn't even catch it.