Related:

• Imbesi's Law with Freeman's Extension: In order for something to become clean, something else must become dirty
  but you can get everything dirty without getting anything clean....
• Imbesi's Law of the Conservation of Filth: In order for something to become clean, something else must become dirty.
• Freeman's Extension: . . . but you can get everything dirty without getting anything clean.
• To get something clean, one has to get something dirty.
  To get something dirty, one does not have to get anything clean....
• Can you remember when the air was clean and sex was dirty?
• There is always more dirty laundry than clean laundry.
  -- Walker's Law of the Household If it's clean, it isn't laundry....
• Better clean death than dirty life. -- Frank Herbe
• Oh yeah? Well, I remember when sex was dirty and the air was clean.