The guy who ran the place liked to talk about how the chlorophyll “oxygenated” your blood—of course chlorophyll only makes oxygen in the presence of sunlight, and if you’ve got sunlight in your colon, you’ve got big problems. Even if you could get grass to fill your back passage with oxygen, it’s not like your asshole has any way to absorb it. I get my oxygen the old-fashioned way: I breathe.