1.) n. One who minds their nuts. Typically, holds them incessantly or wears protective yamsack gear for all occasions.
2.) adj. Describes one as a tool, clown, assjack, jackhole, dush or nerd.
Your couch monkey friend that sits with his legs spread wide for all to see while he manhandles his testicles like no one is around. The nutminder has callouses on his hands, not from masturbating, but from sack grabbing all day long in the presence of others and while fully clothed.