Walter: The blow fish puffs up, okay? The blow fish puffs himself up four, five times larger than normal but why? Why does he do that? Because it makes him intimidating, thats why. Intimidating so that the other scarier fish are scared off and thats you. You are a blow fish. Dont you see? Its just all, all an illusion. Its nothing but air. Now, who messes with the blow fish, Jesse?

Quote