(click to enlarge)
I'm sure you seen this! I think the technical term is 'scripting?' Sometimes it's in context, like above, sometimes it's when playing with toys, and sometimes it's just echolalic.
This is from Pixar's The Incredibles - another must-see, if you haven't. The line is from a scene at the beginning, when Dash was sent to the principles office, but was going to be let off, again, must to his teacher's chagrin.
Speaking of scripting, do any of you have a kid that doesn't know this one?:
800-588-2300 ... Empiiiiire ... Today!
(God I hate that song!)