Wacko’s sister’s in a tailspin. How else to explain Janet’s “wardrobe malfunction” at the Super Bowl? The exposure smacked of publicity stunt. But the massive media boost from Nipplegate cannot save Janet’s sagging career. “Just a Little While,” the first single rush-released by her label, is merely lightweight pop-funk with shades of Prince and the Go-Gos. At press time, Jackson was rumored to be writing a song about her breast-revealing incident, but even that topicality will not prevent this album from going (ahem) tits up.