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5. Mugging

Once you reach Level 50, you can call Lamar and he'll have a thief mug another player. This can be a quick way to make some cash if you are the one calling the thief; alternatively if you are the one who gets mugged, a random masked NPC brandishing a knife will run at you, knock you over, and take all of the cash that you have on hand. (This is why getting in the habit of putting your money in the bank is so crucial.) It should be noted that it is possible to stand up and kill the thief before he gets away. The reward will be your money back and an achievement/trophy.