look up any word, like sex:
 
1.
A guy a with a huge dick and he gets all the girls. this is a boys name. he also plays a lot of video games and is very good at it. everybody wants to be a nepphan. it is also very good at school
dude this guy is such nepphan
i hate nepphans, they are too awesome
by faggetisurmom March 20, 2013
 
2.
I term used to describe the people with small penises.
nepphan has small balls said lucy
by Jukebox1234 March 20, 2013