An Englishman, Irishman and Scotsman planned an expedition across the Sahara, and at the appointed time each showed up with a the baggage critical for his survival.
Motioning to his flask, the Englishman say's, "It's going to be thirsty work crossing this desert and I will need a drop to drink!"
Nodding his approval, the Scotsman points out a box full of Haggis's and say's, "It's going to be hungry work all this walking!"
They both look across at the Irishman, who is carrying nothing but a white drivers door off a car. "It's going to be plenty hot out here, "said the Irishman, "and I want to be able to roll down the window!"