I packed my bag is a car game. One person says "I packed my bag and in it I put...", followed by any object they like in the traditional version of the game. The next person then says "I packed my bag and in it I put...", followed by the original suggestion, and adding their own. A player is disqualified if they forget one of the previously occurring items or can not think of a new item to add to the bag. The game continues until all but the winner has been disqualified.
A typical list might end up something like: "I packed my bag and in it I put a PSP, a PS3, a TV, High-End PC, Gabe Newell, a C# program that can divide by zero, death metal t-shirts, a house, stolen bicycle, my pet mouse, a bar of health."
A common variation of the game is that the items listed must be in alphabetical order, so the first person would need to choose an object beginning with A, the second person's object would begin with B, and so on.
Other variations involve using a scenario other than packing the bag. For example, "I went to the zoo and saw..." following the same rules as either of the above variants.