Before grunge was cool, Pigpen made his debut in the Peanuts comic strip on July 13, 1954 and since then has been the butt of "dirt" gags. He walks around in a cloud of dust, sprinkling dirt on all he comes in contact with. Pigpen is happily messy. He doesn't try to explain it, hide it, fight it. For him, it's just a fact of life.