What is Paipan?
1.
An individual lacking pubic hair, usually depicted as female. This does not nessicarily mean that the individuals hair was removed, it can also mean pre-pubescent.
The main character in the Manga/Anime "Ghosttalker's Daydream" is described as paipan but does not shave, she simply has never developed pubic hair.
See
2.
Someone who dosn't have any hair where it counts
After the party, Ronald woke up
paipan