Teenage girls so, like, rule English THE teenage girl is the most powerful influence on the evolution of the English language around the world. According to new research, the typical 16-year-old girl -- armed with a mobile phone and a wide circle of friends -- has ensured the success of new phrases such as "muffin top" (a bulge of flesh over low-cut jeans) and "whale tail" (the appearance of a g-string above the waistband of a skirt or trousers). Sali Tagliamonte, associate professor of linguistics at the University of Toronto, believes the strongest recent shift has been the spread of...