The phrase "messy poops" refers to bowel movements that are not solid or well-formed, but instead, they are loose, watery, sticky, or difficult to control. Full definition
The pocket opens at the front, which is kind of awesome because no matter how messy the poop got I never got any on me trying to unstuff the diaper. (themamaknows.com)
Here are 5 things I never thought I would hear myself say: Don't worry about the messy poop all over the carpet, I will clean it up. (mommyniri.com)