hmmm, this is gonna be tough. Wrap the icepack around your leg, with a small airline attached to the end of the pack leading to your nuts. Then tape that line to your nuts and your good.
I think I might have just figured a way to fix my problem. I will simply dip my nuts in latex! I may do this to my inner thighs to so they don't chafe while walking in the desert. Well, guess I'm off to the porno shop for some latex tomorrow.