Anthony Weiner's latest cyber-sexcapades, featuring a photo of his sleeping son beside the pervy ex-pol's bulging crotch, ended his marriage Monday - and could now lead to an investigation for child neglect, experts say. "Anytime adults draw children into their own sexual activity they have crossed the line. It is always inappropriate for an adult to connect any child to their sexual activities, however peripheral," said Tim Hathaway, executive director at Prevent Child Abuse New York.