In Cumberland County, NC (Fayetteville), a 17 year old is facing being tried as an adult (over 16) for child pornography possession (stemming from sexting), comprising images of himself at age 16. In North Carolina, you can be charged as an adult at 16, but it is illegal to possess pornographic images of anyone under 18, even if that is the self. Reason Magazine has a story about the Kalfa-esque Catch 22 by Robby Soave here, on his “Hit and Run” blog.
Fusion has the story by Danielle Wiener-Bronner here. It appears both the female and male are being charged.
Theoretically, in North Carolina at least, an adult could be charged for possessing nude baby pictures or film taken of him by his parents, in a different era when there was no conceivable criminal intent, unless mens rea is invoked.