If you aren't selling your poop, you are literally flushing money down the toilet.

Get cut in while you cut one.

You could be making cash while you read this. Someone is offering real money for your feces, and it isn't even some weird Japanese sex thing that you have to hide from your family.

OpenBiome uses your human poop to create a medical treatment for people suffering from an intestinal infection, and have decided that each waste donation you make is worth $40. They want to buy your poop so bad, that If you come in and crap for them 5 times a week, they'll give you and extra $50. That's $250/week my friend, or $13,000/year, just for being yourself.

Sources: The Washington Post | OpenBiome