Have you ever contemplated a way to try and get your friends to buy you free drinks? Look no further. We have found the trick that will have everyone bowing at your feet and picking up your tab in no time. Want to find out how? Check out the sneaky, brilliant idea below.
What's that sound, you ask? That's the sound of your friends reaching for their wallets.
Here's 20 more mind tricks you can play on your friends.