The root of the first part of the word lies in "alack," as in "alas and alack!" Therefore there's no room for the letter s in the first syllable of lackadaisical. It's amusing to see just how often ignorantes choose to use big words just to look clever - but slip up. Delicious. Your man could just as easily and far more economically referred to the "lax" preparation for games. Or poor, or sloppy, or casual.