A blonde, brunette and redhead are in a desert.
The brunette says, "I brought some water so we don’t get dehydrated."
The redhead says, "I brought some suntan lotion so we don’t get sunburned."
Then the blonde says I brought a car door."
The other girls said, "Why did you bring that?"
Then the blonde says, "So I can roll down the window if it gets hot."