This is serioius. Please don't be offended.
I have had serious chafing issues. I am a little overweight but mostly believe it is do to a genetic disposition to large thighs.
I solved most of the thigh chafing by wearing tight boxers. But they didn't support my scrotum and I had worse scrotal chafing. I solved that by wearing tight brief underwear.
Now I am wearing two pairs of underwear and bodyglide.
Does anyone else have these issues and how have they solved them?