Don't Use That Kind of Language Around Here!

Recently when my 5 year old daughter and I were on our way home from town, she exclaimed from the back seat, "I didn't know "pee" was a bad word!"

Not being a family who has ever actually refrained from using the word "pee" I replied, "pee's not a bad word, honey."

She proceeds to correct me, saying "It is, Mommy. "Pee" is a bad word around here." By this point I'm really not sure what she's talking about and am about to shrug it off as something she's heard from other kids or at the sitter's. Then she points out a sign as we drive past..."See that sign has a "P" with a line through it!"