Wow, never thought I would come across a thread like this. I shave with the gillette thing, how ever you spell it, with the 4 blades. I've never really had any problems, I don't really go slow, It's like after you do it for a while you know how quick you can go on some areas around the balls and slow on other parts. I use body wash though, that works really well. I never itch that badly down there, not like you are saying. Maybe when I first did it but that was a long time ago. How long have you been doing it?
Also about your ass, if your straight don't worry about shaving it. Even if your gay it doesn't matter. I shave mine, never itch and it's fairly easy shaving there. I've never had any problems with doing it, nothing like dunno001 said. However, I don't do it as often as my ball. lol this is such a funny thread.
(Am I taking this too seriously????)