You can use the hair removal cream designed for ladies' bikini regions without any ill effect.
Also, if you're willing to bear the expense, a beautician can wax it for you.
I don't reccommend using a razor on yourself, although getting your missus to do it for you might add to the erotic fun.
As for preparation. A shower beforehand at a minimum, an enema if you're really paranoid and whatever you do, please do not pass gass while she's down there. I shouldn't have to say that, but it has been known to happen.
And happy butt licking!!
Bwahahaha NO! - me
The follow you just received is a direct result of the lead you just gave. - my dance teacher (and true for both BDSM and ballroom)
Football isn't a contact sport, it's a collision sport. Ballroom is a contact sport. - I don't remember who said this.
What's life without whimsy? - Sheldon Cooper
Oh! The Places You'll Go - Dr Seuess
'panem et circenses'