First take out liability insurance with an expensive insurance company. Then commit a crime by buying some weapons in one of the joke shops. Pay the fine imposed by the police and claim your insurance do this a few times and voila.
Using a terminal, dial a joke store and ask for "ice cream". The flavors are actually aliases for weapons.
Ice Cream Weapon
Chocolate Poison
Lemon Bombs
Strawberry Bazookas
Vanilla Flame throwers