In New York, if you weigh under 200 pounds and decline so much as a cookie at a co-worker's party, women will flock to your side, assuring you of your appealing physique. This is how skittish we are about the dangers of anorexia and the pressures of body image.
Brits and Americans have hundreds of different phrases for the same thing. Luckily, it's usually a source of amusement rather than frustration. A flashlight by any other name is still a torch. My personal favourite is 'fairy lights,' which we boringly refer to as 'Christmas lights.'