pottymouth

To have a mouth that seems like a potty either symbolically or physically to others. It is believed to first be encountered mysteriously during an online chat with Finn the goldfish. Many debate as to whether this incident ever happened.

Hey, could you open that pottymouth of yours? I need to go.

Your pottymouth is leaking poopy words.

Pottymouth.

Shut up Finn, i'm not a pottymouth!