Crotch Kick (金的蹴り, Kintekigeri) is a powerful blow from the Vale Tudo which is intended to damage man's most vulnerable and sensitive vital organ: the testicles.
The Crotch Kick can be performed in different ways. For example, the user can have his back to the opponent. Following this, the user must tilt the upper body forward while lifting the leg up, causing the blow to pick up speed and power. Finally, the user of the technique will strike with the sole of the foot and the heel on the genitals of his opponent.
The blow serves to expose the opponent to a next attack or to escape from a grip, in cases in which the user of the technique has great speed and strength as Yuujiro Hanma or Baki Hanma, one or both of the rival's testicles may break. Although it seems an invincible technique, Shinshinkai karate masters and okinawan karate masters can escape the attack by somehow putting their testicles inside. That defense technique is named Kotsukake.