Bug Out Bag A bag, kit, or vest that a person carries on or near their person, in the event of a natural disaster, civil uprising, war, or any other event that dictates that you leave the area ASAP. These bags typically contain survival gear, food, water, weapons, etc. When the riots started, I grabbed my bug out bag, and hit the road. -Source Urban Dictionary I've my emergency kit for 3 days but no Bug Out Bag. What's in yours?