The other morning Colleen was snuggling with Emmy and giving her love. Colleen was kissing Emmy in appropriate places, and naming them before she kissed them.
Face, Nose, Ear, other ear, hand, finger, thumb, etc. It was bonding and helping Emmy to learn her body parts.
Suddenly Emmy says "Mommy, bottom. Mommy kiss bottom" To which Colleen replies not. Then Emmy says "Why? Why? Why?" Colleen just starts laughing uncontrollably.
Finally Emmy says "Gross??" We don't know where she learned that word.