1. A dilute amount of bleach on a clear band-aid, which remove color from one's teeth making it appear as if the enamel is white and shiny, as to distract others from the user's greater insecurities.
2. The single greatest invention for bulimics.
Sentence: The model maintained sparkling white teeth by using a whitestrip after throwing up each meal.
Question: Why don't the British, at least, use whitestrips?