Sacred Haven of Debauchery

No need to stir up trouble here. You said that it's not necessary for the pants to be on fire. But burning pants are a separate issue. Besides, hands are wiped on underwear; what do pants have to do with it? Why use them as a towel? Pants are on fire. Hands are covered in oil, and they can easily be wiped on underwear. So, even with burning pants, you can clean your hands, which means that these two facts don't interfere with each other and don't contradict each other.