awkward exercise problem

Hey, I've just started to run for exercise (got to get my fat ass in shape), and I come across a rather awkward dilemma.  After running for several days, I've developed an uncomfortable rash on the upper half of my inner thigh from what I think is one leg rubbing up against my boxers/other leg.  Any tips for prevention of such a rash?

dont run

you aren't supposed to wear boxers when you run, or you put yourself at risk of testicular torsion.

'Testicular torsion'?  o.0

Okay, thanks.  I'll look into getting me some briefs.