Before my vasectomy, I gave the ol satchel the aerodynamic treatment.
Took me quite a while in the tub of a hotel room, since I was traveling for work. I wouldn't have been able to ride with all them pricklies, fortunately (?) my balls hurt bad enough that I had time to regrow.
I wouldn't suggest it for riding or ladies or really anything.
For legs, a once over every 4 weeks with an electric clippers is enough. Remember, smoothness helps road rash cleaning and infection. It doesn't have any effect on aerodynamics. You don't have to be polished.