A lion in the zoo was lying in the sun, licking its ass, when a visitor turned to the zoo keeper and said,

"That's a docile old thing isn't it ?"

"No way," said the zoo keeper, "it's the most ferocious beast in the zoo. Why just an hour ago it dragged a Frenchman into the cage and completely devoured him."

"Hardly seems possible" said the astonished visitor, "but why is it lying there licking its ass?"

"The poor thing is trying to get the taste out of its mouth."