Beer Pong (also known as Beirut) is a drinking game in which players throw a ping-pong ball across a table with the intent of landing the ball in a cup of beer on the other end. The game typically consists of two two-player teams and multiple cups set up on each side set up in triangle formation. There are no official rules, so rules may vary widely, though usually there are six or ten plastic cups arranged in a triangle on each side. The goal of the game is to eliminate the other teams' cups before one's own cups are eliminated. When a ball lands in a cup, which are generally 1/4 to 1/3 full, that cup is eliminated and the defending team must consume all of the beer inside that cup. The losing team must consume all the beer remaining in the winning team's cups. The order of play varies – both players on one team shoot followed by both players on the other team, or players on opposite teams can alternate back and forth. Teams: Beer pong is usually played with two teams of two players each, though it can be played with two teams of one person each, or other numbers of players. Each team begins the game standing at either end of the table behind their rack of cups. Playing field: Although the game is typically played on either a ping pong table or a folding banquet table, enthusiasts may create a personalized table for use by friends and visitors. In general, this will be a plywood board cut to proper size, sometimes painted with sports, school, or fraternity symbols and given a liquid-proof coating. Some companies sell tables as well. Equipment: The most common cups used are 16 ounce disposable plastic cups with ridge-lines which can be used precisely to measure the amount of beer to be poured into the cup. On each side of the table, teams assemble equilateral triangles, with a convergence point focusing on the other team. Games typically use either six, ten, or fifteen cups. Each team usually has a separate cup of water as well, used to rinse the ball off. To prevent the spread of 99.9 percent of infectious diseases. 38 mm or 40 mm table tennis (ping pong) balls are typically used for game play. Alcohol: An inexpensive pale lager or light beer of 3.2-5% ABV is sometimes preferred because of the large quantities of beer which may be consumed during the course of several games. The game may be played without beer, as is done at Utah State University, where alcohol is banned -- root beer is used instead. The game may also be played with water instead of beer. This version may include a "money cup" (one cup filled with an alcoholic or non-alcoholic drink). This game has been banned at Dartmouth due to a possibility of water intoxication. Game play: There are very few universal or "official" rules. Typically, players abide by a uniform set of "house rules", which are often consistent within one university or region of the country (e.g., "Ivy League rules" or "West Coast rules"), or may vary on a "house-by-house" basis. Number of cups, bouncing, amount of alcohol, the distance shots must be taken from, etcetera, may all vary. In some house rules, players must immediately drink any cup that has been hit. Failure to do so incurs a penalty, such as drinking more beer or losing the game. Some rule sets allow for "re-racking" (also known as "rearranging", "consolidation", and other names), which is a rearrangement of a team's remaining cups after some have been removed. The formations, number of cups, when to rearrange and so on depend on the rule set. For example, a team with three remaining cups may ask the other team to "re-rack" their multiple targets into a single triangle formation. Some other house rules allow swatting the ball away if it bounces and if the ball spins around the cup. Other rules state that if a team makes both shots in a round, they may shoot again, sometimes called a "rollback." After shooting, teams may dunk the ping pong balls into cups of water in order to wash the balls off. However, research showed that the wash cups still hold bacteria, such as E. coli. Shot techniques: There are three key ways to shoot in beer pong: the arc, the fastball (or "laser"), and the bounce shot. The most common throwing technique is the "arc" shot, where one grasps the ping pong ball with the tips of the thumb and forefinger, holds the arm at an angle with the ball upwards, then throw by using gentle elbow motion, holding the upper arm parallel with the table. Some players throw "fastball" style, which uses more of a hard chopping motion to send the ball in a more direct line to the intended target cup. Also, a fastball shot may be favorable if house rules dictate a cup that is knocked over is taken off the table, in which case a fastball can eliminate multiple cups if thrown hard enough. A "bounce" shot is performed by bouncing the ball toward the cups. Since (depending on house rules) the other team may have the opportunity to swat away a bounced ball, a bounce may be worth more than one cup. In some rule sets, bouncing is not allowed. Winning the game: If the opposing team makes the last cup, the other loses unless they can make either all remaining cups or simply one cup, depending on "house rules" - this is called a rebuttal or redemption. In some rule sets, if the opposing team hits the last cup with both of their balls, no redemption is given to the losing team. A shutout rule is a house rule usually stated before a game or during the game in the midst of a shutout. If the shutout does occur the losing team must do whatever the two teams decided on, such as going streaking or drinking a large quantity of beer. Health effects: This game may have several health issues associated with it. Beer pong, as with any activity involving alcohol, may cause players to become intoxicated or even drink enough to get alcohol poisoning. Also, the supposed cleaning effects of the water "dunk" cup may be offset by bacteria in the cups. Some writers have mentioned beer pong as contributing to "out of control" college drinking. In early 2009, news sources claimed a recent study by the U.S. Center of Disease Control (CDC) stated that beer pong was contributing to the spread of Herpes, Mono, and other diseases through shared cups. The CDC quickly responded as the CDC had not done such research, however the U.S. National Institute of Health (NIH) does suggest avoiding the sharing of eating utensils to prevent the transmission of certain contagious viruses such as herpes. Legal restrictions: Some municipalities and states have attempted to ban beer pong, either from bars or in general. In Oxford, Ohio, where Miami University is located, the city council tried to ban the game from being played outdoors, and in Arlington, Virginia and Champaign-Urbana, Illinois bar owners were told to stop allowing the game to be played in their establishments. In the fall of 2007, Georgetown University officially banned all beer pong paraphernalia, such as custom-built tables and the possession of many ping-pong balls. Time magazine ran an article on July 31, 2008 called "The War Against Beer Pong," noting legal restrictions and bans on the game in college and elsewhere.

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