one who likes to be around balls. at first you might think the person just admires your personality and wit but eventually you will find out he has something for your testicles. he is a nard-hound.
guy - "holy shit mike, in order to get in that midget stripper's pants i started letting her little brother, keith, hang around. i'm putting an end to that as i found him staring at my crotch."
homeboy - "yo, keith is a nard-hound"