witzige weihnachtssprüche For the whitest, brightest grin feasible, see the foods you eat and ingest. Liquids like gourmet coffee, tea and soda pop are well known for depositing unsightly discolored and light brown spots on top of your teeth. Darkly colored drinks can also be potential culprits, as well as some types of gravy and fresh fruits items. If you do eat these products, brush your tooth immediately after doing so.