Really? From my experience, most kids (i.e. college and below) who play DDR even semi-regularly are rarely impressed by any sort of accomplishments. Usually, it's only the slack-jawed yokels who came into the city for the day who are impressed by anything I can do.
Story: Once I was playing DDR with this guy, and he picked "Can't Stop Fallin' in Love Speed Mix," which is a pretty tough song for a lot of people. I ended up with a full combo AA, around 50 greats. I heard people clapping and cheering, so I turned around to acknowledge my fans... then noticed the other guy had gotten a AAA (all perfects). No one had even been watching me, LOL.
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You said, "I'm gonna run you down." I heard, "I'm an orangutan."