From my “Murphy’s Law” desk calendar archives thanks to Aunt Evelyn, Uncle Pipey, and cousin Nancy:

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.

 Goofy guy’s evidence of Imbesis’s Law of the Conservation of Filth and Freeman’s Extension: Here, the dirty object resulting from cleaning is me while if everything is dirty and nothing is clean, i am the dirtiest of all that’s dirty.