No Peeing!

We were driving home from a park when I heard Shaylee say, "No Peeing."
Concerned I asked her what she was talking about. She said, "That sign said NO PEEING." Being fairly familiar with the terrain I asked her, "What sign?" She said, "The sign back there had a P with a big, red, cross through it." She was disillusioned when I told her that it meant No Parking. Although I did get a laugh when it crossed my mind what a "No Peeing" sign might look like.