Is this Plumbing related?

Pop quiz. Is the damage seen in the picture above (originally posted by  ElaborateToast) caused by a plumbing related issue? The answer is below the fold so you have proper time to think on it.

Answer: It's a mole.

Give yourself 10 points if you figured it out. And, if you didn't know it, share this around so you can educate somebody else.

XtremeDoggo commented: What you have there, is a mole.