Depending on which tabloid you read in the back corner of the convenience store, on Tuesday Britney Spears gave birth to a second son. Or her first daughter. (Having paid close attention in high-school bio, I can tell you that at least one of the stories is right.) At press time, the consensus seemed to be that there's a stem on the apple, though the newsstands had recently trumpeted the news that Spears had a girl on board, and had even decided to name the lass Jailynn, after her folks Jaime and Lynn. Instead, Spears and her hubby may opt to go with a combo of Kevin Federline's parents' names, which, K-Fed guesses, "would be Mop. Or maybe Pom?"