Note: This works for most of the alcohol in the game. Drink some form of alcohol to get super strength when fighting with your fists. You can do far more damage and if you hit the right combo, you can send your opponent flying into the air.
For even more strength, dial #BEERMUSCLES in your cell phone for milk bones. Then, go to the liquor shop and drink some bubbly. Punch somebody and they will now go twice as far.