this is a brazilian joke so I hope it translates. Out here the portuguese are treated like the polish in the U.S. and the Irish in Britain:

An American , a Brazilian and a portuguese were in a shipwreck and the found up on a tropical island where they were captured by a tribe of cannibals. They gave the three castaways a chance to live but they had to go into the jungla and pick a fruit which they would then shove up their...well...their assholes.If they did so without making a sound then they would be aloud to live. They all three ran into the forest to find their fruits. The Yank returned first with a peach, as he was shoving it up he squeked and the cannibals slit his throat. The Brazilian came out with a grape and as he was shoving it up, he made a sound and they slit HIS throat. When he reached heaven the yank was waiting for him and he said "Man, you had it made how come you started laughing?"and the Brazilian turned to him and said, "Well, everything was going fine until I turned around and saw the Portuguese guy coming out of the jungle with a pineapple...."