“It only takes one person with diarrhea to contaminate the entire pool,” the agency added, along with a gif of a girl going down a slide while leaving an unmistakable brown streak in her wake.

The agency tweeted a warning that “one person with diarrhea can contaminate the entire pool,” along with a cartoon gif of a girl going down a slide leaving a brown streak behind.

Paradoxical diarrhea happens when loose, watery stool gets around hardened, impacted stool in your colon and leaks from your anus.

The agency tweeted a warning that “one person with diarrhea can contaminate the entire pool,” along with a cartoon gif of a girl going down a slide leaving a brown streak behind.