Constantine "Cus" D'Amato is a genius boxing trainer who has created many monsters in the world of boxing. His most famous student and also the last become the ruler of the boxing world for several years after his death.
And the boxing technique brought by Iron Mike Tyson that his opponents fear was named by boxing fans, Peek-a-Boo. A cute name for a deadly boxing technique.
Peek-a-boo is a boxing style that received its common name for the defensive hand position, which is normally placed in front of the face, like in the baby's game of the same name. The technique is thought to offer extra protection to the face whilst making it easier to jab the opponent's face. The fighter holds their gloves close to their cheeks and pulls their arms tight against their torso. Cus D'Amato didn't use the term peek-a-boo and instead referred to it as a tight defense.