Maddy does this a lot in the car lately.
I thought I'd take advantage of the wait for the drive-thru window at Hungry Howies (btw - best invention ever!) to capture it on video.
In case you really don't want to watch the video, are annoyed that it's sideways, and/or can't hear it...here's the transcript:
Maddy: Mama! Mama! Mama! Mama! Mama!
It's basically adorable.