dreamer: i love to have my balls shaved and smooth all the time, juist feels so good, have done all my pubes in the past but dont now cos i get funny looks in the showers!
i wouldnt suggest that u shave yr arse, most uncomfotable when it grows back, + it suddenly goes all slimey and sweaty, so the hairs there do serve a purpose!!
as for nair - i tried it once, out a dab on my balls waited about 5 mins then washed it off, thought there was no effect and forgot about it, now i have a patch where the hair never grows which is cool, but it also lost all the skin colour and is just a white patch!!! but it didnt hurt so i guess i was lucky