one day a woman came up to a group a women for a survey.

The woman asked them what one thing they would bring if they were to go hiking through the Sahara.

The redhead said she'd bring water, so she wouldn't dehydrate.
The brunette said loose fitting clothes, so that she could stay cool.
The blonde said a window. The woman was confused and asked why.
"So that I don't waste all my car battery on the AC!"