I went camping and found myself 10 miles from the nearest camp store and with wet logs (thanks to a sudden storm). I had neglected to bring any lighter fluid and needed to find a way to get a campfire going. I began to scavenge our supplies for what i could find, knowing I needed some form of oil and alcohol.
This is much safer than siphoning gasoline from your car, which I do not suggest you try. (no I didn't try it first :)