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).
Understanding volleyball court dimensions has big impact on how well you play the game of volleyball. The volleyball court specifications require the court to be 18 meters (60 feet) long and 9 meters (30 feet) wide. The volleyball court has a centerline that divides each teams side into a 9 by 9 meter area of court space.