Diarrhea

Kristen and Corban were on the couch when the heard Karis calling out from the bathroom. She was going on and on saying things like, "Gross!", "Yuck!", "This is sick!". They finally saw her peek her head around the corner and say, "I have juice poop." She went back to finish and when she came out she said, "I have poop slush." How do they come up with stuff like that?