A small plane crashed in the middle of the desert. The pilot and co-pilot were stranded and wandered around for days in search of food, but could find nothing. Finally the co-pilot announced "I’m so hungry, I’m going to chop off my cock and eat it."
"Before you do," said the pilot. "Think of your girlfriend." The co-pilot answered "What’s the point? At this rate I will never see her again anyway."
"I know," said the pilot. "but if you think of her first, hopefully there will be enough for both of us."