To force someone to place their teeth on a curb or other raised edge and kick them in the head, usually causing great dental anguish and damage, if not death. Probably descriptive of the damage such an act would cause to the cranium, as if one jumped on a turtle resting on a hard surface. As depicted in American History X.
Tom's teeth are so mangled, I'd swear someone gave him a turtlestomp.
by Odinsworn December 19, 2006