For a cut-paste job: Curbstomping, also known as "curbing", "headstomping", or "biting the curb", describes an act of violent execution in which the victim's head, or rather mouth, is positioned against a curb (as if he were biting it) and applying a large amount of force to the back of the head or neck by the quick stomp of a steel-toe boot. When applied to the base of the neck, the result is a broken neck. When applied to the crown of the skull, the force is directed toward the jaw, separating it from the skull. Curbing is often associated with skinheads. It may also occur during a "boot party", a term describing a group of skinheads who gang-up on a victim and kick or stomp them with their boots, with the intent of severe injury or death. Such an act was depicted in the 1998 movie, American History X, which features Derek, one of the film's protagonists, murdering a man who had been in the process of stealing Derek's car by curbstomping him. [This is an image which will disturb me for the rest of my life. -ed] Curb Stomping is also depicted in the Xbox 360 video game "Gears of War" as a special move. In 2002, two San Diego youths were convicted for the attempted murder of a Mexican migrant worker through curbstomping. http://en.wikipedia.org/wiki/Curb_stomping

Placing someone's mouth on a cement curb, and then stomping on their head from behind. I only know this from the movie American History X; prior to that, I had never heard of such a thing.

I went most of my life thinking this was called a smiley. It happened to somebody in Mobile Alabama, and we LMFAO'd.