If you're like me, you've always been a tiny bit obsessive about stopping bad breath, You've brushed two or three times a day, used mouthwash after every meal, and carried around packs of gum or mints; but that bad breath always seems to linger. Why? chances are, the problem isn't your teeth; it's your tongue.
What color is your tongue? Is it the rosy, unblemished pink that you see in most pictures? More realistically, it's covered in a thin gray film. This film is made up of colonies of bacteria that stubbornly survive brushing, flossing, and rinsing. To get rid of these puppies you have to up the ante. Scrape your tongue. You can go out and buy a real tongue scraper, but it's probably expensive. Being stingier than Scrooge, I just use a disposable plastic knife. Hey, we're scraping our tongues, it doesn't exactly require high end products.
If you're trying to scrape your tongue but have trouble with your gag reflex when you get towards the back, where much of the bacteria congregates, you can suppress your gag reflex by pressing your thumb against a flat surface for twenty seconds. I don't know why, but it works.