In July 1992, Mattel released Teen Talk Barbie, which spoke a number of phrases including "Will we ever have enough clothes?", "I love shopping!", and "Wanna have a pizza party?" Each doll was programmed to say four out of 270 possible phrases, so that no two dolls were likely to be the same. One of these 270 phrases was "Math class is tough!" (often misquoted as "Math is hard"). Although only about 1.5% of all the dolls sold said the phrase, it led to criticism from the American