Two fish are in a tank. One says to the other, "You drive, I'll man the guns."
A story from Memphis Belle:
So, a British bomber is flying over Germany and is shot down. The Germans capture one of the pilots in the plane. His leg is so badly damaged that they have to amputate it. Before they put him out, he asks "When it's sawn off, could you drop it over the airodrome in England?" So they did. A week later the other leg got infected and they had to cut it off. Again he asked "Could you drop it over the airodrome?" So once again they did. The next week his arm got infected, and had to be amputated so once again he asked them to drop it over the airodrome. So yet again, they did. A week later his other arm got infected (This guys got crappy luck) and once again had to be amputated. So, as usual, he asked them to drop it over the airfeild, but this time they refused. So naturally, he asked why. The Germans replied "Ve zink ju are trying to escape."