Hmmmmmmm, certain to give you lot a good laugh but it DOES hurt when you catch yourself. Saddles today don't allow for male riders on the whole, when I trained 21 years ago we were shown how to make a "gentleman's" riding saddle and as we formed the seat with webbing etc we had to allow "ball" room by leaving a dip in the seat for your tackle to sit in, this is the traditional way to make a men's riding saddle but in the modern world there is no such thing of course, has he tried a gel seat saver?
Might cushion the blow a bit.
I have the same problem if I slam my brakes on in an emergency on my Triumph Thunderbird, you slide up the seat and slam your wedding tackle against the tank, that smarts a bit too!
The American calvalry had the right idea in the Maclellan saddle, although it was hard on your seat bones the middle part of the seat was missing so if you were "well endowed" everything could hang down the middle and keep cool at the same time.
Oz