"Desert Bare Necessities"

A blonde, a brunette and a redhead were in the
desert, when their car stalled. After a conference
about walking to civilization, they decided that
each of them could take one item from the car. The
redhead took a canteen of water, the brunette took
a bag containing a sandwich, and the blonde took
the car door.

As they were walking the redhead decided to
make conversation, so she asked the brunette,
"Why did you bring the food?"

And the brunette answered back, "In case I
get hungry, I will have something to eat."

And she asked back to the redhead,"Why
did you bring the water?"

The redhead replied, "In case I get thirsty,
I will have something to drink."

They both turned to the blonde and asked her
why she brought the door, and she said, "In case
it gets hot, I can roll down the window!"