I read the kids the story of Gideon's army tonight at bedtime. If you're not familiar with it, our little Bible story book basically said Gideon and his army of only 300 stood outside the enemy camp and blew their trumpets and broke clay jars. The enemy thought Gideon's army was huge and they fled. (The biblical account is a little more detailed).
When I finished the story, my son said, "That, my friends, is an old-school bluff".