If you're a "Wicked Tuna" fisherman, you say, "wicked" a lot. It's what you do. But if you overuse a word, its meaning can be lost, which is what happens when two fishermen walk inside with the day's catch and say the word over and over. When one of them walks into the kitchen, The Wicked Witch from "The Wizard of Oz" (or "Wicked") walks in and scares the other, prompting him to yell, "Wicked! Wicked!" Since he hears it all the time, the other one just reacts as if he said something normal. GEICO tells viewers to watch "Wicked Tuna" on National Geographic Channel and to visit the GEICO website to see if they can save money on car insurance.