Backyard Bible Club is coming . . . but?

So, I make my way back from an afternoon appointment and find the door to my office closed with a sign which I did not put there:

I open the door ever so carefully and I find a meeting is already in session:

They were very polite and all, but it was obvious that I wasn't invited.

Now, I must say that the wily Mrs. Pichulo looked less surprised than Sven (the church pool manager) and I did.

And to what might these signs point?

And, does any one really have any idea how many of those p . . . p . . . (penguins) . . . THOSE THINGS can be found around the church? I know but I'm not telling . . . . yet.

Uncle Pinky