The game begins when the dealer turns over a first card for the player seated to their right. That player must guess whether the penis shown on the next card will be larger or smaller than the one on the previous card. An incorrect guess results in a penalty: drink a shot, drink for a number of seconds equal to the difference between the two cards, or complete a challenge of your choice, such as truth or dare, taking a funny photo, or removing an item of clothing. Customize the rules for even more memorable parties!