Mariah Carey and Nick Cannon had twins the other day — a girl and a boy — and now she's teasing us about what their names are. In a later tweet, she gave an additional hint: "both begin w/M's!!!! : )" What do you guys think they are? My first guess is Mariah for the girl and Mr. Iah for the boy, but really they could be anything. Well, anything that starts with an M. Marsha and Melvin? Mango and Maniac? Mimi and M'Nick? When will she tell us?!?!