According to WrascalBC's translation on this Vintage Ads post, the text on this Tokyo subway poster reads, "I look like Santa because you've had too much to drink. It's only October. If you drink, be considerate of the other passengers."
I write books. My latest is a YA science fiction novel called Homeland (it's the sequel to Little Brother). More books: Rapture of the Nerds (a novel, with Charlie Stross); With a Little Help (short stories); and The Great Big Beautiful Tomorrow (novella and nonfic). I speak all over the place and I tweet and tumble, too.