Nifty·Posted on Oct 23, 20179 Coffee Hacks All Caffeine Addicts Need To KnowPlease don't speak to me until I've had at least 4 cups of coffee.by by Emily ShwakeBuzzFeed Staff, by Chelsea EversBuzzFeed ContributorLinkFacebookPinterestTwitterMail 1. Shake warm milk in a mason jar for a thrifty cafe au lait. Tap to play GIF Tap to play GIF 2. Fill your coffee mug with hot water and a denture cleaning tablet to dissolve stubborn stains. Tap to play GIF Tap to play GIF 3. Stack two cups in front of your office coffee maker so no one has to drink a stale cup again. Tap to play GIF Tap to play GIF 4. Eat grapefruit with your coffee to get a better caffeine rush. Tap to play GIF Tap to play GIF 5. Pre-mix sugar into your milk bottle to save time making morning coffee. Tap to play GIF Tap to play GIF 6. Freeze coffee in an ice cube tray and never dilute your iced coffee again. Tap to play GIF Tap to play GIF 7. Make your own breath spray to get rid of coffee breath. Tap to play GIF Tap to play GIF 8. Rub away coffee stains on your teeth with hydrogen peroxide and baking soda Tap to play GIF Tap to play GIF 9. Hide scratches in your wood floors with old coffee grounds. Watch all the tricks here. View this video on YouTube youtube.com And subscribe to BuzzFeed Nifty for more cool tricks!!