Speech development is so interesting. Caitlin is now past the stage where she simply imitates everything we say, and is starting to show some real comprehension of the language. We can already tell she's on the road to becoming a punster:
Me: The vet said Keisha is in great shape!
Caitlin: Is she a rectangle?
(looking through the Costco catalogue)
Me: This is a hot tub.
Caitlin: (points) ... and this is a cold tub.