[Told to me in the absolutely most earnest way ever while I was rocking her before bed the other night.]
Mommy, Santa Claus doesn't like it when you say bad words...like "stupid" or "jackass" or "panties-in-a-wad."
Okay, "stupid" she got from school. "Jackass" she got from me (I've got a wee case of the road rage dontcha know...), but "panties-in-a-wad"? That's 100% her grandmother.