knickers
An old dictionary definition for knickers, was short trousers worn by footballers, and by women as underclothes. This dates back to the time when knickers was short for knickerbockers, you see. It was quite acceptable at one stage in British history for men to say "let's put our knickers on and have a knockabout".
Anyway, the girl discovering this definition would ask the boys if they played football. Of course we did - we were boys. So she replies "you wear knickers", to which we, in turn, would say "don't be stupid".
written by Cr*ig *uds*n, approved by Susan