PETE Townshend - already a registered sex offender for accessing a kiddie porn site he insisted was research for a book - is in the doghouse again over child sex. The Who star, 61, published an erotic short story about two 16-year-olds on the Web. One milder passage reads: "She had splendid breasts for such an elfin girl: loose, low and lush; she was a luxurious creature." Yesterday, after child welfare groups went ballistic, Townshend yanked the story, saying, "I'm so sorry for those of you who were beginning to enjoy it, but it has upset certain people, and I sincerely do not wish to offend anyone."

PG6