A sheep sits in the middle of a field surrounded by n lions (where n is some number greater than 10). Any lion can eat the sheep but, as each lion knows, it would become so tired that it would be as defenseless as a sheep itself--easy prey for another hungry lion who would in turn become tired and defenseless.
LOL! Actually I'm studying for my Economics mid-term and I found this on my study page! lol!
Not sure if this is allowed or not...if not just remove and my apologies....but seriously it just screams "Twilight!" lol!
Full page here: