a person (male or female... mostly male) who can not properly satisfy a woman via the great art of fingering. If you are called this you probably poke the vagina harshly rather than gently massaging it as it should be.
Commonly abbreviated as NP, nut puncher refers to a squirrel, chipmunk or other furry little woodland creature that loves cracking open nuts through the use of martial arts (such as karate).
Kozmo is the coolest nut puncher around. He's out there punching open those nuts like a total BA while all of the other squirrels are struggling with those nut cracker dolls I threw out last Christmas after I discovered the musical was written by a Communist.
its when someons punching power is way stronger then the punching power of the guys in the same weight class. It can also mean that the person is the most suited to be an infighter.