Nobody welcomes Spring like Hindus. Much like Mardi Gras, Holi, the Spring festival of colors, celebrates mischief and merrymaking. But I'm going to wager it's the only religious festival that involves paintball-like rituals. Of course, it's not paint, but colored powdered and water. The tradition of throwing and smearing it on others dates back to the seventh century, and it's celebrated most jovially in India, Nepal, and Sri Lanka.