Um.

Parker has started adding "ums" to most everything he says. The more excited he is, the more ums there are. Sometimes the ums go on for a good 5-10 seconds before he starts talking. Like, "Um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, um, Is it Saturday?!!!!" This is a fairly recent development and I'm guessing it will go away at some point sort of like sucking on his shirt, sucking on his hands, wrapping his fingers over each other, and other little quirks that have come and gone.

The interesting thing is that Elizabeth, in her lifelong quest to be like her big brother, has started mimicking him in a very exaggerated way. Since it isn't natural were her, she really has to think about each um as it comes out, unlike Parker who can say about 5 ums in one second.