In this tutorial, we learn how to use leverage to win a free beer from friends. First, approach your friend and ask them if they want to make $20 dollars and if they lose they have to buy you a beer. Now, tell your friend to put their right foot against a wall along with their cheek touching the wall. If they can lift their foot up for 6 seconds, they win the $20. This is a great trick to play on your friends and get you free beers all night! If someone does turn out to win, make sure to pay them the $20!