Friction pain, how to deal with it?

So I'm 5 years on t, I have pretty substantial bottom growth to the point that the cellar doors can no longer hide the monster within. Before I was able to...situate myself so he wouldn't rub against my underwear, but that doesn't work anymore and I've tried so many different kinds of underwear but they all do the same thing :( Does anyone else have this problem and if so, how do you take care of it?