Food For Two

A small aircraft crash lands in the middle of the desert and the pilot and co-pilot wandered around for days and days with nothing to eat. Finally the co-pilot announced:
"I'm so hungry, I'm going to chop off my dick and eat it."
"NO, no, don't do that," the pilot urged. "Just think of your girlfriend."
"What's the point?" the other man said. "At this rate I will never see her again anyway."
"I don't mean it like that," the pilot replied. "It's just that if you think of her first, hopefully there will be enough for the both of us."