lavatory; toilet

muddy or dirty, especially of liquids or air; turbid

dirty and foul; sordid; morally corrupt

messy; confused; chaotic; lacking order and clarity

falling on a cushion or into a toilet; metaphor for the vast differences in people's fortunes or social status depending on where they land in life

Literally "some petals fall on cushions and some fall into the toilet"; used to describe the different and often random life destinies of people, such as some falling into wealth while others fall into poverty.