A Pole, English, and French guy are running away from the German soldiers when they come up to a forest and they decide to hide by each climbing a tree. When the Germans arrive, they go to the first tree where the English guy is, and shout, We know youre up there; come down. The English guy, thinking fast, says, Twit, twit, twit…

The Germans, thinking that its a bird, move on to the next tree where the French guy is and once again shout, We know youre up there; come down.

The French guy, thinking fast, says, Woo, woo, woo…

The Germans, thinking that its an owl, move on to the next tree where the Polish guy is and once again shout, We know youre up there; come down.

The Polish guy thinks for a while and then says, Moo, moo, moo…