According to the National Geographic website (their kids' version that is) the Pufferfish can inflate into a ball shape to evade predators. Also known as blowfish, these clumsy swimmers fill their elastic stomachs with huge amounts of water (and sometimes air) and blow themselves up to several times their normal size … But these blow-up fish aren't just cute. Most pufferfish contain a toxic substance that makes them foul tasting and potentially deadly to other fish. The toxin is deadly to humans—1,200 times more deadly than cyanide. There is enough poison in one pufferfish to kill 30 adult humans, and there is no known antidote.

Like Pufferfish, human beings can blow themselves up with pride and arrogance to make themselves look bigger than they are. And this pride can become toxic to a marriage, a church, or a friendship. No wonder the late Bible scholar John Stott once said, "Pride is your greatest enemy, humility is your greatest friend."