I've just come in from the pub and read Sir Frank's post and Mrs T casually enquired what was funny. Didnt tell her, but apart from the whole saga it was this that caused the biggest laugh - my undercarriage now resembles Simon Westons face. Sorry!
Back on topic. I use the cheap 3-blade Aldi razor to smooth the ball bag, and tend to deal with it at least a week pre-punt, to avoid Frank type problems. With a final shave night before, using a well worn blade - often Mrs T's.
Dont suppose Elastoplast on the scrotum looks sexy to a WG?