A lion was stalking through the jungle one day when he came across a bull.  The
lion and the bull got into a tremendous battle, but in the end the lion killed
the bull and ate him up.  The lion was so pleased with himself that he threw
back his head and roared and roared.  The noise attracted a hunter who followed
the sound until he found the lion.  The hunter took aim and killed the lion
with a single shot.

Moral: When you are full of bull, it's wise to keep your mouth shut.