Potty Mouth.

My children have it sometimes. 

As we're loading Shepherd, Ella and Paxton up in the car for a day with Grandma and Grandpa:

Grandma: Okay, are we ready?

Paxton: Yeah. I have a little diarrhea. It doesn't work very well for me.

Me: Oh?

Paxton: Yeah, but that's why I turned the fan on.

Thank you, Pax. Thank you.