Hey Pickles...

To answer quickly, of course you don't do this. I'll give you the skinny on what to do here though. It's helped me out a number of times.

Now first, pinch the top of the condom "reservoir" and slide that puppy down to your nuts. Now here comes the tricky part. Get yourself enough Saran Wrap to cover your entire balls, not too much though. Just enough to wrap them up. Now get yourself a rubber band and roll it over your balls and over the Saran Wrap. Perfect. You're done brother.

Oh ya, I wouldn't advise you to to this if you haven't shaved your balls. You need those puppies to be silky smooth for this to work out. Otherwise you risk an opening for nasty infections and such.

Happy Safe Sexing!