If Christmas has Santa Claus and Easter has the Easter Bunny, it makes sense that Halloween must have a legendary figure to believe in too, at least Linus thinks so anyway. This It's the Great Pumpkin, Charlie Brown t-shirt features Snoopy on the front sitting in a moonlit pumpkin patch. The shirt lets everyone know that you're a believer in the Great Pumpkin. Of course, you might want to heed Linus's advice after his clashes with the nonbelievers. "There are three things I have learned never to discuss with people: religion, politics, and the Great Pumpkin."