Just thought I would let everyone know that most of the following sentence is copied from here: 
The pool cue is a tool and a weapon in Grand Theft Auto: San Andreas and Grand Theft Auto IV. It seems to have the longest reach out of all the melee weapons, but it's main use is just what the name says. GTA San AndreasChallenge someone to a game of pool in a bar somewhere, and after beating them on the table, the player can keep the cue to smack people around with. Though it is an effective meleé weapon, the player cannot sprint, because of the pool cue's length. Any meleé weapon the player has will be replaced by the Pool Cue.