Press SHIFT + ~ (tilde) to open the console window and enter the following cheats for the desired effect.
Code Effect
sweetMoves(gamechar); - Unlock all powermoves. goodTimes(gamechar); - Gives you some drugs. vegasBaby(gamechar); - Gives you some money. godlike(gamechar); - Infinite health. swingingbeef(gamechar); - Maxes out your base ball level and fills the meter. alloftheabove(gamechar); - Grants all of the effects of the other codes at once. pauseDaylight(1); - Stops day/night cycle.