The idea of teenagers sexting is disconcerting, but so is this anti-sexting public service announcement starring The Actor's Studio's James Lipton, in which he invokes the phrase "junk"… 

There's a lot more like this, i.e.:

RELATED —  MSNBC takes a closer look at sexting today:

More than a quarter of young people have been involved in sexting in some form, an Associated Press-MTV poll found.