Possibly a repeat but, anyway. Three men are stranded on an island only to discover it is inhabited by cannibals. The cannibals tell them, "If you do not want us to eat you, you must bring back 10 fruits each." So they do. The first man comes back with apples. "Now," said the cannibals, "you must shove them all up your butt without making any noise, or we will eat you." After 5 apples, he winces and gets eaten. The second man comes back and has blueberries. The cannibals tell him the same thing, and he is about to put the last one in when he laughs, so he is eaten. In heaven, the first man asks the second, "Why did you laugh? You almost made it!" And the second man says, "I saw the third guy coming back with pineapples!"