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1.
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.
by mortalesteban May 18, 2010
 
2.
A child between the ages of toddler and preschooler. The age where children lunge around the room craching into things and catching themselves with their fists.
I can barely breathe, that little nutpuncher got me good.
by Kirkules February 06, 2008