noun - a child performer whose appearance and/or behavior possesses adult characteristics particularly of a sexual nature.
adj - possessing the appearance of having been inappropriately sexualized
noun - "Did you see her floor exercise - what a little Jon Benet!"
adj - "Makeup on children under ten is a bit too JonBenet for my taste."
An act of autoerotic asphyxiation performed by two people. It basically involves getting choked in a basement until climax.
Steve: "Dude, know how Stephanie likes to be choked? Well last night, we went into her basement and she totally let me Jon Benet her!"