When the changeover happened the karate instructer apologized for having run over, which was very nice of him as it really wasn't a big deal. Dave's comment was more amusing: "We fear you." Sure Dave, a room full of martial artists and you fear the ballroom dancers. Then I realized the karate people were all barefoot whilst I was wearing pointy high heels.
What made it an amusing exchange was imagining their reaction to the Spanish Dancer From Hell who often has the room after us. Not only does she wear shoes made for stomping things, but she flies into a rage if the room isn't empty the very second she shows up. Quietly changing your shoes in the corner is apparently not good enough. Happily I haven't seen her since I called her a b____.