A perscription, schedule III, narcotic analgestic (pain killer) containing hydrocodone and acetaminophen (Tylenol). Hydrocodone is actually an opiate, like heroin, that gives an amazing euphoric body high but it's also very addictive (although not nearly as addictive as heroin).
Unlike basketball and football, there is no way of knowing how long a game of volleyball will be. Like the others have already said, whoever wins the first 3 out of 5 sets wins the game. How long that can take can be anywhere from 30 minutes to 2 hours. (I've played in both).
The first team to reach 25 points wins the set. Three sets wins the match, and the fifth tiebreaker set, if necessary, is only played to 15 points. Teams switch sides after every game. In beach volleyball, a match consists of a series of best-of-three game, with each game played to 21 points.